Senarai Abstraksi by dwi pramono

this page is intentionally leave blank â&#x20AC;&#x201C; halaman ini sengaja dikosongkan

SEMINAR NASIONAL KOMITE NASIONAL INDONESIA – ICID TAHUN 2013

SENARAI ABSTRAKSI Tema Seminar Securing Water for Food and Rural Community under Climate Change

SEMARANG, 30 NOVEMBER 2013

SAMBUTAN KETUA PELAKSANA RAPAT ANGGOTA TAHUNAN, PENGUKUHAN KOMITE ICID PROVINSI JAWA TENGAH DAN SEMINAR NASIONAL KOMITE NASIONAL INDONESIA-ICID TAHUN 2013 Assalamualaikum Wr. Wb. Marilah dalam kesempatan ini kita panjatkan puji dan syukur kepada Tuhan Yang Maha Esa atas segala limpahan rahmat, taufiq dan hidayahNya, sehingga kita dapat dipertemukan dalam acara “Rapat Anggota Tahunan, Pengukuhan KomiteICID Provinsi Jawa Tengah dan Seminar Nasional Komite Nasional Indonesia ICID Tahun 2013” yang diselenggarakan di Hotel Patrajasa Semarang dalam keadaan sehat wal’afiat. Dasar pelaksanaan Kegiatan ini adalah hasil Kongres KNI ICID dan seminar yang dilaksanakan di Mataram pada tanggal 8-9 April 2011 yang mengamanatkan agar Rapat Anggota Tahunan selanjutnya dilaksanakan di Semarang pada tahun 2012. namun karena kesibukan organisasi, baru terlaksana tahun ini yang dikaitkan dengan seminar nasional sebagai ajang seleksi makalah dari Indonesia yang akan dipresentasikan pada pertemuan ICID tahun 2014 di Gwangju, Korea, sekaligus pengukuhan Komite-ICID Provinsi Jawa Tengah. Thema dari Seminar Nasional KNI-ICID kali ini adalah “Securing Water for Food and Rural Community under Climate Change.” Rangkaian Kegiatan KNI-ICID kali ini diselenggarakan dalam 2 (dua) hari mulai tanggal 29–30 November 2013 dengan agenda kegiatan meliputi: Rapat Anggota Tahunan, Pengukuhan Komite - ICID Provinsi Jawa Tengah dan Seminar Nasional KNI-ICID. Rangkaian kegiatan RAT, Pengukuhan dan Seminar kali ini diikuti ± 250 peserta terdiri dari: Unsur Pengurus KNI-ICID beserta

para sesepuh Kementerian Pekerjaan Umum, Pengurus Komite-ICID Provinsi seIndonesia, SKPD Provinsi Jawa Tengah maupun Kabupaten/Kota se-Jawa Tengah terkait Sumber Daya Air, Perguruan Tinggi Negeri dan Swasta, Pemerhati Sumber Daya Air dan LSM, Lembaga Pemerintah Non Kementerian maupun perorangan dan Mahasiswa. Terimakasih kami sampai kepada para pemakalah utama yang berpartisipasi acara seminar nasional KNI ICID antara lain Bapak DR. A. Hafiedz Gani, M.Sc selaku Vice President Hon KNI ICID, Prof. DR. Ir. Sigid Supadmo Arief, M.Sc, Bapak Kaspono selaku Ketua Federasi P3A Sistem Kedung Ombo, Bapak Ir. Suryo Banendro, M.P. selaku Kepala Dinas Pertanian Tanaman Pangan dan Hortikultura dan kami juga mengucapkan terimakasih kepada 41 orang/kelompok pemakalah dari seluruh Indonesia. Kami atas nama Panitia juga mengucapkan terimakasih yang sebanyak-banyaknya kepada Para Pengurus KNI–ICID, Para Pengurus Komite ICID Provinsi di seluruh Indonesia dan Balai Besar Wilayah Sungai se Indonesia serta para sponsor antara lain PT. Brantas Abi Praya, PT. Pembangunan Perumahan, PT. Tata Guna Patria, PT. Nindya Karya dan PT. Virama Karya atas bantuan dan partisipasinya, dan semua pihak yang mendukung penyelenggaraan acara ini sehingga dapat terlaksana dengan baik. Pada kesempatan ini kami juga menyampaikan permintaan maaf apabila dalam penyelenggaraan ini masih terdapat banyak kekurangan, kesalahan dan ketidaksempurnaan.

Wassalamualaikum Wr Wb

Prasetyo Budie Yuwono, ME

DAFTAR ISI Potential Impacts, Mitigation And Adaptation Of Climate Changes On Water Resources And Irrigated Agriculture In Indonesia. .......................  Dr. Ir. Hafied A. Gany  Vice President Hon ICID

Keberadaan Sistem Irigasu di Indonesia: Masalah, Tantangan, dan Harapan untuk Masa Depan ........................................................................  Sigit Supadmo Arif, Eko Subekti, Abi Prabowo dan Bayudono  Guru Besar Teknik dan Manajemen Irigasi, Universitas Gadjah Mada,  Direktur Irigasi dan Rawa, Ditjen SDA, Kementerian PU  Peneliti Balai Besar Enjinering Pertanian, Kementerian Pertanian RI  Ketua Dewan Riset Daerah Yogakarta

Upaya Peningkatan Produksi Tanaman Pangan di Provinsi Jawa Tengah **paparan**  Ir. Suryo Banendro | Dinas Pertanian Tanaman Pangan dan Holtikultura

Pengelolaan Sistem Irigasi Layanan Waduk Kedung Ombo Antara Rencana dan Realisasi **paparan**  Kaspono | Ketua Federasi P3A Sistem Kedung Ombo

Perubahan Iklim Dunia Mempengaruhi Hasil Panen Perlu Adanya Pipanisasi Irigasi untuk Meningkatkan Panen Beras Warga Perdesaan .  Subandi, Agus Hasanie, Widyo Pranoko, Rita Mulyati Malik, Dwi Rezekia Sugeng dan Efa Tanggulungan  Konsultan Perorangan SDA, BBWS Pompengan Jeneberang, Makassar

Peranan Bendung Gerak Tempe Solusi Terhadap Perubahan Iklim Dunia Untuk Mengembangkan Irigasi Dan Air Bersih di Desa Sengkang .........................................................................................................  M. K. Nizam Lembah, Eka Rahendra, Sumardji, M. Andi Irham, Subandi, Anisa Adam Agie  Subdit PP Wilayah Barat, Dit Sungai dan Pantai, Ditjen SDA, Jakarta

Perlu Kewaspadaan Menghadapi Perubahan Iklim Dunia untuk Mendukung Ketahanan Pangan Penduduk Desa Kabupaten Sidrap .......  Syahmusir, Subandi, Agus Hasanie, Siang Bantaeng, Vera Carter dan Dwi Rezekia Sugeng  Pemerhati SDA BBWS Pompengan Jeneberang, Makassar

Ancaman Perubahan Cuaca Dunia Menghambat Panen Raya di Daerah Irigasi Teknis Kellara Perlu Didukung Pembangunan Bendungan Serbaguna Karalloe ........................................................................................  Agus Setiawan, Hariyono Utomo, Eka Rahendra, Subandi dan Andika Kuswidyawan  Kepala BBWS Pompengan Jeneberang, Makassar

Model Hidrodinamika dan Transpor Sedimen pada Muara Sungai Musi Palembang, Sumatera Selatan .............................................................  Achmad Syarifudin, Momon Sodik Imanuddin dan Bistok Simanjuntak  Doctoral Candidate of Environmental Sciences,Sriwijaya University, Lecture of Bina Darma University, KNI-ICID South Sumatra

Saluran Drainase Bawah Permukaan Menggunakan Sekam untuk Pengelolaan Tinggi Muka Air Tanah dan Mengurangi Dampak Perubahan Iklim Pada Lahan Basah ...........................................................  Erry Koriyanti, Robiyanto H. Susanto, Dedi Setiabudidaya, Ngudiantoro, F.X. Suryadi  Universitas Sriwijaya

Teknologi SeDrainPond (SDP) untuk Mendukung Hasil Produksi Pertanian Akibat Perubahan Iklim Berbasis Pemberdayaan Masyarakat ...  Sriyana  Dosen Jurusan Teknik Sipil Undip

Salah Satu Penyelesaian Banjir Dan Kekeringan untuk Daerah Irigasi Dekat Laut .......................................................................................................  Supriya Triwiyana, Pattiwiri, Wilem Minggu, Taufan  HATHI Cabang Sulawesi-Selatan Balai Besar Wilayah Sungai Pompengan-Jeneberang

Peningkatan Peranan Irigasi Dalam Upaya Adaptasi Perubahan Iklim Untuk Mendukung Kedaulatan Pangan di Sumatera Barat ......................  Dr. Ir. Eri Gas Ekaputra, MS  KNI ICID Sumatera Barat - DI Sumatera Barat

Perubahan Cuaca Dunia Mempengaruhi Gagalnya Panen Raya Daerah Irigasi Teknis Bili Bili Kampili Bissua .........................................................  Haeruddin C. Maddi, Feriyanto Pawenrusi, A. Adi Umardani, M. K. Nizam Lembah, Subandi dan Anna Ekawati Rusly  Kasatker PJPA, BBWS Pompengan Jeneberang Sulsel, Makassar

Downscaling Model Iklim Sebagai Alat Bantu dalam Assessment Bencana Kekeringan Akibat Perubahan Iklim ...........................................  Nadjadji Anwar, Gusfan Halik dan Edijatno  Jurusan Teknik Sipil, Institut Teknologi Sepuluh Nopember Surabaya

Peran Penting Irigasi dan Drainase Dalam Pengelolaan Air Hujan untuk Pertanian sebagai Tindakan Adaptasi Perubahan Iklim Pada Pulau Kecil Daerah Kering Indonesia ..........................................................  Susilawati  Dosen Jurusan Teknik Sipil Universitas Katolik Widya Mandira, Jl. San Juan Penfui Kupang

Kekeringan Semakin Sering Terjadi Pada Daerah Irigasi di Jawa Tengah ............................................................................................................  Waluyo Hatmoko, R. Wahyudi Triweko dan Iwan K. Hadihardaja  Kandidat Doktor Teknik Sipil di Unika Parahyangan, Bandung

The Use of Satellite-Derived Rainfall Data and Digital Elevation Model for Estimation of Rainfall over Scantily Gauged Basins. ..........................  Revalin Herdianto, Bambang Istijono, Dalrino, Adek Rizaldi  Department of Civil Engineering, PoliteknikNegeri Padang, Department of Civil Engineering, Andalas University, Ka.Balai Wilayah Sungai V Sumatera, Anggota KNI-ICID, Corresponding author

Potensi Irigasi Pipa untuk Peningkatan Indek Pertanaman .....................  Dadan Rahmandani, Wildan Herwindo, Subari  Calon Peneliti, Peneliti, Puslitbang SDA Bandung Balai Irigasi, Pusat Litbang Sumber Daya Air, Badan Litbang PU

Underground Stream and Telaga Water Harvesting Strategy in Gunungkidul Regency ...................................................................................  Rr. Vicky Ariyanti, ST, M.Sc, M.Eng, Noorpratomo Wirawan, ST, Kuji Murtiningrum, ST, M.Tech  Balai Besar Wilayah Sungai Serayu Opak, Ditjen SDA

Penerapan Hydropower di Kawasan Karst untuk Jaringan Irigasi Air Tanah. .............................................................................................................  Pulung Arya Pranantya, ST. MT, Ahmad Taufiq, ST. MT  Peneliti Pusat Penelitian dan Pengembangan Sumber Daya Air Kementerian Pekerjaan Umum

Optimalisasi Pola Tanam Daerah Irigasi Klambu Kanan. .......................  Fuad Kurniawan, Indra Bangun, Suseno Darsono dan Pranoto Samto  BBWS Pemali Juana, Pusat Studi Bencana Universitas Diponegoro, Jurusan Teknik Sipil Universitas Diponegoro

Daerah Irigasi Teknis Tommo Berpotensi Menjadi Lumbung Padi Sulbar dengan Mewaspadai Perubahan Iklim Dunia ....................................  M.K. Nizam Lembah, M. Asdin Tholib, Sumardji, M. Taufan, Subandi, dan Rita Mulyati Malik  Subdit PP Wilayah Barat, Dit Sungai dan Pantai, Ditjen SDA, Jakarta

Integration Opportunities Between Irrigation Management and Cooperative Farming in Indonesia ..............................................................  Nanang Rianto, FX Hermawan Kusumartono  Researcher in Sociology, Water Resource Experimental Station, Research and Development Center for Social Economy and Environment, Research and Development Agency

Suplesi Air untuk Budidaya Padi di Lahan Rawa Lebak dengan Sistem Irigasi Curah ..................................................................................................  Edward Saleh, Chandra Irsan dan M. Umar Harun  Dosen Program Studi Teknik Pertanian, Fak.Pertanian Univ. Sriwijaya

Development Instrument of Quantitative Assessment of Irrigation Management Performance.............................................................................  Sahid Susanto and Sigid Santosa  Professor at the Faculty of Agricultural Technology, Gadjah Mada University, Yogyakarta, Indonesia

Perkiraan Hujan Efektif untuk Kebutuhan Air Irigasi Memanfaatkan Data Hujan Satelit TRMM (TMPA 3b42rt) pada Wilayah Kurang Data Lapangan ........................................................................................................  Irfan Sudono, R. R. E. Vernimmen, Marasi Deon Joubert  Peneliti di Balai Irigasi, Pusat Litbang SDA, Kementerian PU

Water Available of Secure Food ...................................................................  Kesya Ratna Rapa | Papua River Basin Organization

Pengembangan dan Pengelolaan Irigasi Partisipatif di Provinsi Jawa Tengah ............................................................................................................  Sri Purwanto | Kepala BPSDA Bengawan Solo

Model of Water Allocation in Kedung Ombo Dam ....................................  S. Imam Wahyudi, Henny Pratiwi Adi, Sri Mulyani  Dosen Jurusan Teknik Sipil, Universitas Islam Sultan Agung Semarang

Model Aplikasi HEC-HMS dalam Pengendalian Banjir Sistem DAS Bendung, Kota Palembang (Pengendalian Banjir Sistem DAS Sungai Bendung dengan Aplikasi HEC-HMS dan HEC-RAS) .............................  Henggar Risa Destania, Aulia Friska Gresia dan Abdul Muis  BBWSS VIII, Komisi Provincial Profesional KNI-ICID Sumatera Selatan

Analisis Ketersediaan Air dan Sedimen di Hulu DAS Jeneberang ..........  I. Latifah, M. Y. Purwanto, N. H. Pandjaitan  Departemen Teknik Sipil dan Lingkungan, Institut Pertanian Bogor (IPB)

Pengamanan Air di Pulau-Pulau Kecil ........................................................  Happy Mulya dan Robert J Kodoatie  Kepala Balai Papua Dit.Jen. Sumber Daya Air Kementrian Pekerjaan Umum, pengajar di Jurusan Teknik Sipil FT Undip

Analisis Potensi Pengendalian Muka Air Tanah dengan Menggunakan Sistem Drainase Bawah Tanah dalam Mendukung Peningkatan Indek Pertanaman di Rawa Pasang Surut .............................................................  Bakri, Momon Sodik Imanudin, Masreah Bernas dan Johanes  Peneliti pada PUR PLSO-Universitas Sriwijaya

Application of Fuzzy Multiple Attribute Decision Making to Determine Technology of Discharge Report in Provincial-Authoriy Irrigation System ..  Murtiningrum, Noto, Nur Rohmad, Wisnu Wardana, Sigit Supadmo Arif  Lecturer, Department of Agricultural Engineering, Univ. Gadjah Mada

Model Pengelolaan Jaringan Irigasi Pipa pada Lahan Berlereng ............  Dadang Ridwan & Dadan Rahmandani  Staf Balai Irigasi Pusat Litbang Sumber Daya Air Kementerian PU

Penggunaan Teknologi Informasi Dalam Operasi Irigasi Untuk Mendukung Efisiensi Irigasi .........................................................................  Aditya Prihantoko, Susi Hidayah, Marasi Deon Joubert  Calon Peneliti, Peneliti di Balai Irigasi, Puslitbang SDA Kementerian PU

Self Supporting Small Pump Irrigations in The Existing Jatiluhur Irrigation System ...........................................................................................  Mochammad Amron | Commissioner of Jasa Tirta Public Corporation

Analisis Kelayakan Ekonomi Irigasi Tetes di Desa Temiyang dan Desa Pejarakan .......................................................................................................  Elias Wijaya Panggabean | Peneliti Muda di Pusat Penelitian dan Pengembangan Sosial Ekonomi dan Lingkungan, Badan Litbang Kementerian Pekerjaan Umum

Partisipasi Masyarakat pada Operasi dan Pemeliharaan Daerah Irigasi  Pranu Arisanto, Suripin, Suseno Darsono  Mahasiswa Magister Teknik Sipil Universitas Diponegoro Semarang,  Dosen Megister Teknik Sipil Universitas Diponegoro Semarang

Gerakan Irigasi Bersih Sebagai Gerakan Khas Partisipatif Pengelolaan Irigasi  Dede Sulaeman, Sigit Supadmo Arif, Bayudono dan Erwin T.N. Sigit  Mahasiswa Program Doktor Ilmu Lingkungan, Sekolah Pascasarjana, UGM, Guru Besar Teknik dan Manajemen Irigasi, Fak. TP. UGM

Aplikasi System of Rice Intensification (SRI) dengan Teknik Irigasi Berselang (Ngenyatin) dalam Peningkatan Produktivitas Padi pada Sistem Irigasi Subak untuk Jaringan Irigasi Air Tanah ...........................  Sumiyati, Wayan Windia, Wayan Tika dan Ni Nyoman Sulastri  Agricultural Engineering Departement, Faculty of Agricultural Technology, Udayana University

Pengaruh Variasi Konsentrasi Influen dan Hydraulic Loading Rate (HLR) terhadap Penyisihan Parameter BOD dan COD pada Pengolahan Air Limbah Domestik Artificial (Grey Water) Menggunakan Reaktor UASB ................................................................................  Iin Novitasari, Syafrudin, Sudarno, Purwanto  Teknik Lingkungan, FT Undip, Program Doktor Ilmu Lingkungan Undip

Pengaruh Hydraulic Loading Rate (HLR) dan Konsentrasi terhadap Penyisihan Parameter BOD, COD, dan Nitrat pada Pengolahan Air Limbah Domestik Campuran (Grey Water dan Black Water) Menggunakan Reaktor UASB ......................................................................  5Syafrudin, Sudarno, Ardina Sita Ningrum  Program Studi Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

Operation of Citarum Reservoir in Adapting to Climate Change ............  Mohammad Amron, Herman Idrus, Reni Mayasari  President Supervisor Board of Jasa Tirta II Public Corporation  President Director of Jasa Tirta II Public Corporation  Head of Bureau Data Management and Water Allocation of Jasa Tirta II Public Corporation

POTENTIAL IMPACTS, MITIGATION AND ADAPTATION OF CLIMATE CHANGES ON WATER RESOURCES AND IRRIGATED AGRICULTURE IN INDONESIA1 By A. Hafied A. Gany ABSTRACT Spanned over both sides of the equator, Indonesia has a distinct tropical climate, having only two contradictive seasons, which are wet monsoon and dry season. The rainy season is generally taken part from November to April, with some regional variations from region to regions. Some areas in the west have the heaviest rainfall from January to February, while others, especially in the eastern region have different rainfall characteristics. Being the case, the annual average rainfall varies greatly amongst the scattered lowlands of the archipelago from about 1.7 to 3.1 cm, and the mountainous regions could obtain up to 6.1 cm annual average. In contrast with such a distinct rainfall, the annual average temperature is having less variability in the range between 23 to about 32 °C (University of Indonesia, 2007). Given the densely populated area, staggered over 80,000 km length of coastlines and 17,508 islands and isles, Indonesia is considered to be one of the most vulnerable countries against the impacts of climate changes, with a total of almost two million square km of land areas, which accounts of about 85% of the Indonesia’s annual greenhouse gas emissions, that could also bring about significant impacts to agricultural production (WRI – 2002). On agricultural practice, about 60% of the Indonesia’s rice production is grown in the fertile volcanic soils of Java, supported by introduction of high-yielding varieties of rice with improved cultural techniques for sustaining selfsufficiency of rice which was attained in 1984. However, the increasing population followed by decreasing land for rice cultivation as well as increasing land conversion to non agricultural purposes, is now tending to jeopardize the food supply of the country. Some 60% of the nearly 40 x 106 tons of rice production is produced on Java. However, the rice self-sufficiency has been influenced by the variability of climate effects of the El-Nino/Southern Oscillation phenomenon with significant threat of climate changes. This paper briefly reviews the trend of potential impacts, mitigation and adaptation of global changes on water resources and irrigated agricultural practices in Indonesia including on water resources and crop production of irrigated agriculture. Special scrutiny would be focus on the trend that Irrigation increasingly become paradoxical and become more important and at the same time more vulnerable to the impact of climate changes. Thereby adaptation to the climate change should also be enhanced gradually, and therefore it would be important for the farming community to learn from this experience. This paper also postulates the necessity to scrutinize and identifying the needs to plan mitigation and adaptation activities for probable impacts in different agro-climatic and irrigation settings. These includes water saving irrigation technologies that have to be made in the future, and the trend of a much larger proportion of water storage will be on farm in the future, both for the choices between using water for irrigation and maintaining aquatic eco-systems which will be the main focus of water allocation under the climate change. 1

This paper has been prepared by Mr. Hafied Gany, Ph.D., P.Eng., for the Annual Meeting of Indonesian National Committee of ICID (INACID), Semarang – Central Java Province, 29-30 November 2013, Having special theme on “Securing Water for Food and Rural Community under the Climate Change” -- Mr. A. Hafied A. Gany is Irrigation and Water Resources Expert on Scientific Board of INACID; Vice President Honoraire (VP Hon of ICID); and Member of Board of Assessment for Professional Civil Engineer, Indonesian Institute of Engineer (PII); and Independent Monitoring and Evaluation Consultant for Eastern Indonesian Irrigation Projects DISIMP II, BAPPENAS. gany@hafied.org; hafiedgany@gmail.com

KEBERADAAN SISTEM IRIGASI DI INDONESIA: MASALAH, TANTANGAN DAN HARAPAN UNTUK MASA DEPAN1 Sigit Supadmo Arif2, Eko Subekti3, Abi Prabowo4 dan Bayudono5

ABSTRAK Keberadaan sistem irigasi di Indonesia diperkirakan sudah berlangsung sejak abad pertama, namun secara tertulis jejak keberadaanya baru diketahui pada abad ke 4 Masehi. Sejak itu keberadaan sistem irigasi dicatat sangat berperan dalam hubungannya dengan penyediaan pangan baik secara lokalisktik dan secara berangsur berfungsi sebagai prasarana penyediaan pangan dan penopang sistem perekonomian nasional. Mengingat kedudukannya yang sangat strategis maka keberadaan sistem irigasi sejak lama juga menjadi alat penegak kekuasaan pemerintah sehingga keberadaan irigasi juga menjadi pemasalahan sosial politik dan tidak lagi hanya sebagai sebuah kumpulan infrasturktur yang mengatur pengaliran air untuk tanaman. Tetapi sejak masa pembaharuan ini keberadaan sistem irigasi dikembalikan lagi fungsinya sebagai masukan dalam sistem produksi pangan nasional. Namun keberadaan sistem irigasi ini semakin lama juga akan menghadapi tantangan dan permasalahan yang tidak mudah. Perubahan lingkungan strategis dalam bentuk persaingan penggunaan air antar sektor, alih fungsi lahan, perubahan kebijakan sampai dengan munculnya fenomena perubahan klimat semuanya itu akan menyebabkan keberadaan sistem irigasi harus dapat menyesuaikan dan mengantisipasinya secara jitu. Makalah ini bertujuan untuk dapat membahas keberadaan sistem irigasi masalah yang timbul berkaitan dengan isu-isu perubahan lingkungan stategis dan ekologis yang terjadi berserta upaya pemecahan masalah yang dapat dilakukan di masa yang akan datang. Kata kunci : keberadaan sistem irigasi, pengelolaan, persoalan, masa depan

Makalah utama disampaikan pada Seminar dan Konggres KNI-ICID, 29-30 Nopember 2013, di Semarang

Guru Besar Teknik dan Manajemen Irigasi, Universitas Gadjah Mada, Yogyakarta, Anggota tim penyusun kebijakan irigasi 2015-2025 dan modernisasi irigasi. Kementerian Pekerjaan Umum RI sigit@idola.net.id 3 Direktur Irigasi dan Rawa, Ditjen SDA, Kementerian Pekerjaan Umum.RI esubekti@yahoo.com 4 Peneliti Balai Besar Enjinering Pertanian, Kementerian Pertanian RI, Anggota tim penyusun Kebijakan Irigasi 20152025 dan Modernisasi Irigasi Kementerian Pekerjaan Umum RI 5 Ketua Dewan Riset Daerah Yogakarta

PERUBAHAN IKLIM DUNIA MEMPENGARUHI HASIL PANEN PERLU ADANYA PIPANISASI IRIGASI UNTUK MENINGKATKAN PANEN BERAS WARGA PERDESAAN Subandi1, Agus Hasanie2, Widyo Pranoko3, Rita Mulyati Malik4, Dwi Rezekia Sugeng5 dan Efa Tanggulungan6 1

Konsultan Perorangan SDA, BBWS Pompengan Jeneberang, Makassar, Subandi_me@yahoo.co.id Peltek Bendung Gerak Tempe, BBWS Pompengan Jeneberang, Makassar, agus.hasanie@gmail.com 3 Pemerhati SDA BBWS Pompengan Jeneberang, Makassar, widyopra@yahoo.com 4 Unit Design BBWS Pompengan Jeneberang, Makassar, rmulyati@yahoo.com 5 Pemerhati SDA BBWS Pompengan Jeneberang, Makassar, dwirezekia.mje16@gmail.com 6 Mahasiswi Teknik Sipil Pengairan UNHAS, Makassar, efa.tanggulungan@yahoo.co.id 2

Abstract Global climate change related with securing water for food and rural comunity. It will be increasing or decreasing of irrigation. Food decreasing for everybody including all of farmers because they can not develope and manage their cropping. The present time, the global climate change will decrease of rice cropping for example; rhe evaporation, infiltration. Generely, irrigation channel from weir to the farmer fields use open chanels. It have a lot of risks, lost of water for example (1) illegal water for irrigation (2) infitration (3) evaporation. so the water can not irrigate as a target the result that the cropping is not optimize. To solve the problem, the opened channel must be changed by the clossed channel. Method of changing the open channel to be closed should be applied step by step application, it means that construction of closed channel should be started from the weir, irrigate to first channel. The end of first channel will be devided to secondary channel through the devide irrigation point. Principly the water should be irrigated from the weir to the field using closed channel. The expected result of this method is no illigal irrigation pumping, no evaporation and no infiltration. All water will be used to manage the field efficiently so the incrising of the rural food as a target. It means that they have supported the nastional food. It is conculded that the fail of cropping come from no securing of water for irrigation because of open irrgation channel, so much of irrigation water will be lost. To protect the global climate change, the development of conservation must be done because it is lower cost than construction like using of close channel. Multi benefit will be taken like the secure of water for increase irrigation, food and rural commmmunity. Key words: opened channel, closed channel, global climate change, conservation development, secure water for food and rural comunity

PERANAN BENDUNG GERAK TEMPE SOLUSI TERHADAP PERUBAHAN IKLIM DUNIA UNTUK MENGEMBANGKAN IRIGASI DAN AIR BERSIH DI DESA SENGKANG M. K. Nizam Lembah1, Eka Rahendra2, Sumardji3 , M. Andi Irham4, Subandi5, Anisa Adam Agie6 1

Subdit PP Wilayah Barat, Dit Sungai dan Pantai, Ditjen SDA, Jakarta, mk.nizam04@yahoo.com.sg PPK Bendung Gerak Tempe, BBWS Pompengan Jeneberang, Ditjen SDA, ekarahendra.kelana@gmail.com 3 PPK Irigasi dan Rawa I Sulsel, BBWS Pompengan Jeneberang, Ditjen SDA, sumardji@ymail.com 4 PPK Program dan Perencanaan, BBWS Pompengan Jeneberang, Ditjen SDA, irham@yahoo.com 5 Konsultan Perorangan SDA BBWS Pompengan Jeneberang, Makassar, Subandi_me@yahoo.co.id 6 Mahasiswi UNM, Komplek BBWS Pompengan Jeneberang, Makassar, anisa_adam@gmail.com 2

ABSTRACT Global climate chane is a serious problem in the present upto the furture time. In dry season, high sedimentation from Tempe Lake, until estuary of Cenranae river so that insufficient raw water supply, fail of cropping, fail of irrigation sea intrusion, grounded boating from Bone Bay to Tempe Lake through Cenranae River in vice versa, decrease of tempe lake environment (fish, birth, traditional fishing). In rainy season flooding is large so nothing to do by the people in Wajo District except the fishing. The Construction of Tempe Barrage is a solution for no secure water of Cenranae River. Tempe Barrage will be a solution for securing of water. After construction, main water related risk should be managed like flooding, sedimentation, river and drainage improvement works, pumping irrigation works, increasing of raw water supply, development of environment, conservation, sea intrusion protection, tourism. Tempe Barrage is constructed in Cenranae River, downs stream of Walanae River or Tempe Lake. It is located about 210 Km north of Makassar. The river Basin consist of 5 sub river basins namely Walanae, Cenranae, Tempe Lake, Bila and Gilirang Sub River Basin. Tempe Lake, Buaya Lake and Sidenreng Lake are retention basin in Walanaeâ&#x20AC;&#x201C;Cenranae River Basin (RB). indicated of flood damage is 21,000 Ha paddy, 6,000 house and 140 km Road were inundated. This River Basin has 9.418 million Cum per year is rounded by Saddang River Basin of 16.420 million Cum per year, Pompengan-Larona RB of 24.687 million Cum per year, Jeneberang RB of 13.229 million Cum per year and the east boundary is Bone. Although Tempe Barrage has been constructed, devekopment of conservation mus be going on for scure of water in the river. The result of sustainable water is increasing of rural irrigation and increasing of water drinking. Key word: tempe barrage, cenranae river, conservation development, secure water, increasing food and rural community

PERLU KEWASPADAAN MENGHADAPI PERUBAHAN IKLIM DUNIA UNTUK MENDUKUNG KETAHANAN PANGAN PENDUDUK DESA KABUPATEN SIDRAP Syahmusir1, Subandi2, Agus Hasanie3, Siang Bantaeng4, Vera Carter 5 dan Dwi Rezekia Sugeng6 1

Pemerhati SDA BBWS Pompengan Jeneberang, Makassar, syahmusir@gmail.com Konsultan Perorangan SDA, BBWS Pompengan Jeneberang, Makassar, Subandi_me@yahoo.co.id 3 Peltek Bendung Gerak Tempe, BBWS Pompengan Jeneberang, Makassar, agus.hasanie@gmail.com 4 PPK OP SDA IV, BBWS Pompengan Jeneberang, Makassar, opsda4_bbwspk@yahoo.co.id 5 Staf BBWS Pompengan Jeneberang, Makassar, vera_carter@gmail.com 6 Pemerhati SDA BBWS Pompengan Jeneberang, Makassar, dwirezekia.mje16@gmail.com 2

ABSTRACT Global climate change is serius problem for Pinrang, Sidrap and Wajo are three regencies in South Celebes which has a regulate flooding in rainy season because of Saddang river. Every year the river is innundated these area by over topping of the existing Saddang dike. In normal condition, The river use to irigate Pinrang, Sidrap and Wajo irrigation area by Benteng Barrage Irrigation Control. The fields are innduted by regulate flooding of Sadang river so the farmer production are fail. It is a serious problem of these regencies because in upper stream no multipurpose dam to store and control Saddang river from flooding. Also, No development of conservation and reforestation to stabilize the discharge. Rehabilitation and monitoring of Saddang River is not optimized and ilegal housing and industries stay in the Saddang flood plain. Development of rforestation is a good solution for flood control and a good solution for increasing food Key word: saddang river, secure water for food and rural community, under global climate change

ANCAMAN PERUBAHAN CUACA DUNIA MENGHAMBAT PANEN RAYA DI DAERAH IRIGASI TEKNIS KELLARA PERLU DIDUKUNG PEMBANGUNAN BENDUNGAN SERBAGUNA KARALLOE Agus Setiawan1, Hariyono Utomo2, Eka Rahendra3, Subandi4 dan Andika Kuswidyawan5 1

Kepala BBWS Pompengan Jeneberang, Makassar, gusagus.cs@gmail.com Kepala Bidang PJSA, BBWS Pompengan Jeneberang, Makassar, yono.2000@gmail.com 3 PPK Bendung Gerak Tempe, BBWS Pompengan Jeneberang, Makassar, ekarahendra.kelana@gmail.com 4 Konsultan Perorangan Pengembangan SDA, Makassar, Subandi_me@yahoo.co.id 5 Mahasiswa Teknik Sipil Pengairan, Unismuh Makassar, andikakusud@aol.com 2

ABSTRACT The problem of Jeneponto regency is a raw water crisis because of global climate change. Additionally, no reservoir or no dam to restore the water. Consequently, In dry season it is no much raw water for irrigation and there are a lot of illegal irrigation pumpimg so finally, no water can be used to manage the fields. In rainy season, a high sediment to deposit in the lowest area. Additionally, there is the regulate flooding and inundates rural and urban area especialy, all of Kellara irrigation for a long time. A Jeneponto river is a joint river between Karalloe River and Kellara River which come from Lompo Batang mountain, flows to estuary through Bontosunggu, a capital city of Jeneponto regency. the existing raw water is not enough to be supplied to the raw water treatment plant and not enough to be supplied to the existing Kellara technical irrigation area so the rice cropping is not optimize although existing Kellara weir and Karalloe weirs are fasilited to support the irrigation. To solve the problem mentioned above, the goverment declared that the Karalloe multipurpose dam will be constructed urgently. The problem will be managed by sustainable integrated water resources management, Step by step method to be applied in 3 terms for example in the short term, the middle term and the long term. Methodology study of this paper focused to solve the raw water crisis and regulate flooding in Jeneponto Regency. The governments apply by not only construction of the Karalloe dam but also to apply an integrated approach. It is extremely needed to solve this problem. The Construction of Karalloe Multipurpose Dam is a disaster solution to solve the raw water crisis and to solve regulate flooding. It is a priority program must be done urgently. Next program in related with global climiate change, the jeneponto capacity must be improved to recharge of raw water during the drought season. During construction, the conservation must be developed such as reforestation, forbid ilegal loging, etc. Key words: karalloe multipurpose reservoir, kellara technical irrigation, jeneponto river improvement, conservation development, secure water for food and rural comunity

MODEL HIDRODINAMIKA DAN SEDIMENT TRANSPORT PADA MUARA SUNGAI MUSI PALEMBANG, SUMATERA SELATAN Achmad Syarifudin1, Momon Sodik Imanuddin2 dan Bistok Simanjuntak3 1

Doctoral Candidate of Environmental Sciences, Sriwijaya University, Lecture of Bina Darma University, KNI-ICID South Sumatra, email: syarifachmad6080@yahoo.co.id 2 Promotor, Lecture of Sriwjaya University,KNI-ICID South Sumatra, email:momon2001hk@yahoo.com 3 Head of Balai Besar Wilayah Sungai Sumatera VIII, KNI-ICID South Sumatra

ABSTRACT Musi River is the largest river with a length of 750 kilometers and an average width of 540 meters (1,350 feet the longest width) located around the Kemaro island. Basically , the sedimentation on the Musi river including the sedimentation rate is high due to the current meeting between Musi river and ocean currents in the Bangka strait. Musi river silting conditions more severe because the silt reaches about 40 cm per month. In fact, the volume of sludge could reach 2.5 million meters続. Along the Musi river shipping channel to the Port Boombaru and Bangka Strait, there were 13 points silting. Four points are particularly vulnerable, because of silting up to 4 meters. Location is quite prone to it that in the northern part of the Payung island and estuary of Jaran, while the locations that experienced the most severe siltation, among others, on the brink of beyond, the mouth of the shore and the waters of the strait south of the island as well as the Payung term sedimentation that can reach 7 km, so the ships that cross the Musi river should be guided by the tidal of Musi river. It is necessary for the study of sediment transport in the outer verge Musi river so it can be predicted by the location of erosion and sedimentation modeling approach MIKE - 21 Flow Model. ________________________________________________ Keywords : sediment transport, navigational flow, hydraulic model

SALURAN DRAINASE BAWAH PERMUKAAN MENGGUNAKAN SEKAM UNTUK PENGELOLAAN TINGGI MUKA AIR TANAH DAN MENGURANGI DAMPAK PERUBAHAN IKLIM PADA LAHAN BASAH (Studi Kasus: Desa Banyu Urip Kab. Banyuasin Provinsi Sumatera Selatan, Indonesia) 1

Erry Koriyanti, 2Robiyanto H. Susanto, 3Dedi Setiabudidaya, 3Ngudiantoro,4 F.X. Suryadi

(1) (2) (3) (4)

Candidat Doctor pada Program Studi Ilmu Lingkungan, Universitas Sriwijaya, Guru Besar pada Program Doktor Ilmu Lingkungan, Universitas Sriwijaya, Dosen pada Program Doktor Ilmu Lingkungan, Universitas Sriwijaya, Dosen pada Water Engineering Department, UNESCO â&#x20AC;&#x201C; IHE, Netherlands

ABSTRACT The use of lowlands for farming activities needs the soil and water management to improve the plantâ&#x20AC;&#x2122;s growth. The water management related directly to water table condition in soil is micro water table system. One of the water table systems that can be done is subsurface drainage system. The purpose of this research is to evaluate the work of subsurface drainage using rice husk implemented in quartery canals as an effort to keep the water level in the root zone of the plant and reduce the impact of climate change on the second crop (MT 2). Observation was done by comparing water table level fluctuation in paddy field using subsurface drainage system towards the paddy field which used open canals and the one without the additional water management system. Water table level fluctuation in paddy field observed through auger hole installed in paddy field between two canals for each treatment. The observation result showed that subsurface drainage with rice husk was better to keep the water table level around the root zone (-0.6 m until 0.7 m below the ground surface) compared to open canals which reached -0.8 m below the ground surface, or even in paddy field without additional water table system that had water table level far away from the root zone (it reached -0.9 below the ground surface). With the use of subsurface drainage the water level control so the water on the land are around the plant roots is easier to do, although this year (2013) there is some climate change, which in this case is wet dry season. Subsurface drainage system can control water levels according to the depth of drainage pipes and water level in the channel, so that when the groundwater is dry, the water level does not drop drastically. But, when it is raining, excess rain water will flow through the subsurface drainage systems to the quartery canals. Another benefit of subsurface drainage system with rice husk is extent areas of paddy field that can be planted by farmer do not decrease and the movement of tools and farming machines are not distrubed.This subsurface drainage system also can reduce negative impacts from rice husk burning, which could produce smoke and climate change.

Keyword: Lowlands, subsurface drainage, rice husk, water table management

TEKNOLOGI SDP (SEDRAINPOND) UNTUK MENDUKUNG HASIL PRODUKSI PERTANIAN AKIBAT PERUBAHAN IKLIM BERBASIS PEMBERDAYAAN MASYARAKAT (STUDI KASUS DI PROVINSI JAWA TENGAH) Sriyana*)

ABSTRAK Kegagalan atau keberhasilan hasil produksi pertanian ditentukan diantaranya adanya ketersediaan sumber air dan kesuburan tanah lahan pertanian milik para petani. Keberadaan sumber air yang ada kecendurungan tidak mencukupi untuk memenuhi kebutuhan irigasi terutama pada musim kemarau, karena kondisi tata air pada Daerah Aliran Sungai (DAS) sudah tidak memadai. Disamping itu pada saat musim hujan terjadi pada erosi lahan,yang menyebabkan berkurangnya kesuburan tanah, sehingga akan mempengaruhi hasil produksi pertanian. Tujuan tulisan ini adalah menerapkan teknologi SDP (SeDrainPond), sebagai tampungan air dan sedimen, yaitu untuk mengetahui berapa hasil produksi pertanian dan prakiraan sedimen yang tertangkap pada model SDP (SeDrainPond) tersebut. Hasil penerapan model SDP(SeDrainPond) yang dilakukan oleh Dinas Pengelolaan Sumber Daya Air Provinsi Jawa tengah dengan mengambil contoh 100 (seratus) unit, dengan ukuran diameter berkisar antara (Ø 1m – Ø 1.5m), dengankedalaman 3m, maka volume tampungan sebesar antara 234 m3. sampai 529m3 dan diperkirakan dapat menangkap hasil sedimen berkisar antara (51 kg, sampai 180 kg) dan (116,38 kg, sampai 407,33 kg). Dengan adanya model SDP, produksi pertanian (Jagung) terjadi peningkatan sebesar 6 (kwintal per hektar) atau pendapatan meningkat sebesar Rp. 1.350. 000; dan produksi pertanian (Cabe) terjadi peningkatan sebesar 2 (kwintal per hektar) atau pendapatan meningkat sebesar Rp. 3.000.000; Dengan demikian, penerapan model SDP ini, dapat mendukung hasil produksi pertanian, meminimalkan kegagalan panen. Diantaranya dalam mengembangkan sistem produksi pangan yang bertumpu pada sumber daya, kelembagaan dan budaya lokal; mengembangkan efisiensi sistem usaha pangan; mengembangkan sarana dan prasarana produksi pangan; serta mempertahankan dan mengembangkan lahan produktif.

Kata Kunci : Model SDP(SeDrainPond), Produksi Pertanian, Pemberdayaan Masyarakat *) Staf Pengajar Jurusan Sipil, FT – Universitas Diponegoro

SALAH SATU PENYELESAIAN BANJIR DAN KEKERINGAN UNTUK DAERAH IRIGASI DEKAT LAUT SUPRIYA TRIWIYANA1, PATTIWIRI 2, WILEM MINGGU 2, TAUFAN 2, 1 2

HATHI Cabang Sulawesi-Selatan Balai Besar Wilayah Sungai Pompengan-Jeneberang

INTISARI Disebutkan bahwa air dapat menyebabkan bencana atau air berhubungan dengan bencana. Air yang berhubungan dengan bencana adalah banjir, kekeringan, tanah longsor, rob, topan, meletusnya gunung berapi yang memberikan dampak mengalirnya aliran sedimen , yang axap kali disebut sebagai Non Newtonian Sediment Flow. Bencana ini secara luas berdampak pada kehidupan manusia, atau mengganggu aktifitas ekonomi manusia. Bencana secara luas dapat terjadi dimanapun kita tinggal, baik di dataran tinggi maupun di dataran rendah, Situasi demikian membuat manajemem Pengelolaan Sumber Daya Air menjadi rumit, melibatkan beberapa sektor, antar wilayah, sesuatu yang multi aspek, dan juga memunculkan beberapa kesulitan untuk pengambilan keputusan. Beberapa manajemen pengelolaan sumber daya Air telah diterapkan untuk mempertimbangkan pendekatan holistik. Untuk praktek manajemen yang demikian, kemudian dapat tidak hanya untuk mrndukung pembangunan pada penerapan infra struktur, tetapi juga bagaimana bagaimana menjamin sustainableitas dari sumber daya air, melalui usaha lonservasi air, manajemen sumber daya air, dan pencegahan bencana secara seimbang, Bagaimanapun paper ini mencoba memberikan satu penyelesaian sebagai suatu alternatif untuk mengurangi kekeringan maupun banjir, terutama daerah irigasi dekat laut, yang ketika musim kemarau mengalami kekeringan dan musim hujan

Kata Kunci: banjir, kekeringan, tepi, laut

PENINGKATAN PERANAN IRIGASI DALAM UPAYA ADAPTASI PERUBAHAN IKLIM UNTUK MENDUKUNG KEDAULATAN PANGAN DI SUMATERA BARAT IMPROVEMENT ROLE OF IRRIGATION IN EFFORTS CLIMATE CHANGE ADAPTATION FOR SUPPORT OF FOOD SOVEREIGNTY IN WEST SUMATERA Dipersiapkan oleh; Dr.Ir. Eri Gas Ekaputra,MS1 Fadli Irsyad STP. MP2 Ali Musri, M.Eng3 Syafril Daus, ST.MT4 Nalvian, ST.MT5 KNI ICID KOMDA Sumatera Barat

ABSTRAK Irigasi yang merupakan salah satu sarana produksi perlu ditingkatkan kemampuannya, sehingga dapat menyelesaikan tantangan yang dihadapinya berupa adaptasi terhadap perubahan iklim. Hal ini terlihat pada kawasan pantai barat sangat berpengaruh terhadap pola tanam dan kebutuhan air irigasi. Hasil analisis data curah hujan pada beberapa stasiun curah hujan sepanjang pantai barat Provinsi Sumatera Barat menunjukkan penurunan total curah hujan secara signifikan dengan nilai probabilitasnya sampai 66%. Perubahan ini akan sangat memengaruhi aktifitas pertanian terutama sektor padi sawah. Memerhatikan persoalan tersebut diperlukan dukungan manajemen irigasi seperti peranan irigasi harus peka terhadap kelebihan dan kekurangan air sebagai dampak terhadap perubahan iklim serta dapat meningkatkan produktivitas lahan, melalui kesepadanan teknologi irigasi dalam adaptasi terhadap perubahan iklim. Jadi, keberadaan irigasi menjadi vital dalam menjaga dan meningkatkan produktivitas hasil pertanian. Apalagi pemerintah telah mencanangkan target surplus beras 10 juta ton per tahun pada 2014. Untuk itu diperlukan beberapa perubahan dalam manajemen sistem irigasi melalui memenuhi kebutuhan layanan irigasi yang menggunakan air yang lebih sedikit atau hemat air, dengan kepastian untuk memeroleh air yang cukup tinggi tepat waktu, jumlah dan ruang melalui; (i) jaminan air irigasi, (ii) perubahan sistem usaha tani yang hemat air melalui penerapan usaha tani system of rice intensification (SRI) dan (iii) perubahan institusi manajemen irigasi sehingga petani dilibatkan dalam pengambilan keputusan serta penyediaan dan pendistribusian air. Kata Kunci: Peran Irigasi, Adaptasi Perubahan Iklim dan Kedaulatan Pangan

Dosen Fakultas Teknologi Pertanian Universitas Andalas Padang, anggota Pengurus INA-CID 2012-1016, anggota pengurus Komda KNI-ICID Provinsi Sumatera Barat, Anggota Dewan Sumber Daya Air Sumatera Barat. 2 Dosen Fakultas Teknologi Pertanian 3 Kepala Dinas PSDA Sumatera Barat 4 kepala Seksi Penanganan Sungai dan Irigasi DinasPengelolaan Sumber Daya Air (PSDA) Sumbar 5 Kepala Seksi Perencanaan dan Program Balai Wilayah Sungai Sumatera V

PERUBAHAN CUACA DUNIA MEMENGARUHI GAGALNYA PANEN RAYA DAERAH IRIGASI TEKNIS BILI BILI KAMPILI BISSUA Haeruddin C. Maddi1, Feriyanto Pawenrusi2, A. Adi Umardani3, M. K. Nizam Lembah4, Subandi5 dan Anna Ekawati Rusly6 1

Kasatker PJPA, BBWS Pompengan Jeneberang Sulsel, Makassar, heru_pu.bbwspj@yahoo.com Kasatker PJSA, BBWS Pompengan Jeneberan Sulsel, Makassar, fpawenrusi@gmail.com 3 PPK Pengendalian Sedimen Bawakaraeng, BBWS Pompengan Jeneberang, Makassar, udha96@gmail.com 4 Subdit PP Wil Barat, Dit Sungai dan Pantai, Ditjen. SDA, Jakarta, mk.nizam04@yahoo.com.sg 5 Konsultan Perorangan SDA, BBWS Pompengan Jeneberang, Makassar, subandi_me@yahoo.co.id 6 Mahasiswi Fakultas Teknik Pengairan, Unismuh Makassar, rusli@yahoo.com 2

ABSTRACT The global climate change is a problem because it can be a disaster for the people. It must be responded by natural approach like development of forestation, conservation. It is a good way to anticipation of next disaster. Consider with a Bawakaraeng caldera colapesed with the sedimantation risk. A lot of sediment deposit to Bili Bili reservoir, high turbifity is problem for people, the effective water volume in reservoir will be lower than design volume. Increasing sedimentation is related with decreasing of raw water. Only 50% of raw water is distributed from Bili Bili reservoir can be treatment to be clear water by raw water treatment plant so many complain of consumers to the governent. Only 50% of raw water can be irrigate to Bili Bili, Kampili and Bissua irrigation are so the cropping is fail. To dredged sedimentation of reseveoir must be done for increasing water volume. The next methode for antisipation next erotion and land slide, the development of conservation must be done. Reforestation also must be done. The people and the government mus develop reforestation together, help each other. Promotion and training of conservation development should be done regulary. The good conservation will secure water to be sustainable discharge. Sustainable discharge will secure water for clear water and increasing of cropping. Let global climate change but it can be protect by a good conservation. Key words: global climate change, sedimentation of bili bili reservoir, rural irrigation water crisis, plural clear water crisis

DOWNSCALING MODEL IKLIM SEBAGAI ALAT BANTU DALAM ASSESSMENT BENCANA KEKERINGAN AKIBAT PERUBAHAN IKLIM Nadjadji Anwar1, Gusfan Halik2 dan Edijatno3 1

Jurusan Teknik Sipil, Institut Teknologi Sepuluh Nopember Surabaya nadjadji@ce.its.ac.id Program Doktor Jurusan Teknik Sipil, Institut Teknologi Sepuluh Nopember Surabaya gusfan@gmail.com Jurusan Teknik Sipil, Institut Teknologi Sepuluh Nopember Surabaya edijatno@ce.its.ac.id

ABSTRAK The drought is long-term phenomena causing significant damages in both human lives and economic losses. It has unique characteristic in which its occurrence comes slowly and it is difficult to determine its onset. Since then it is very difficult to measure the drought. Drought indices are utilized to overcome such condition. One of the indices is SPI (Standardized Precipitation Index), a meteorological index that approved internationally for drought monitoring. Meanwhile, the fourth report of Intergovernmental Panel on Climate Change (IPCC 2007) declared that the climate change induce rainfall pattern changes in South East Asian countries, including Indonesia. The objective of this research was to assessment of climate change impact on drought using downscaling climate model (General Circulation Model). The proposed SD (Statistical Downscaling) model was divided into two steps. The first is the development of the reduction of dimensionality of GCM outputs using MSPCA (Multi scale Principal Component Analysis). The MSPCA is a combination of wavelet transformation for data decomposition and Principal Component Analysis (PCA) for dimension reduction. The second step is modeling of monthly rainfall using BPNN (Back propagation Neural Networks). The results show that BPNN (3-20-1) is the best model to predicts monthly rainfall over Sampean watershed. The output of the model was then utilized to predict SPI. The geospatial analysis indicates that the drought at Sampean Watershed varies from moderate to extreme one. The drought intensity increase with increasing the concentration of CO2 at atmosphere. This information can be used to drought mitigation strategies. Keywords : climate change, SD model, MSPCA, BPNN, drought assessment

PERAN PENTING IRIGASI DAN DRAINASE DALAM PENGELOLAAN AIR HUJAN UNTUK PERTANIAN SEBAGAI TINDAKAN ADAPTASI PERUBAHAN IKLIM PADA PULAU KECIL DAERAH KERING INDONESIA Susilawati Dosen Jurusan Teknik Sipil Universitas Katolik Widya Mandira, Jl. San Juan Penfui Kupang 85361, NTT-Indonesia, srsusipi@yahoo.com

ABSTRACT Climate change on small island semi-arid region Indonesia has significant impact on food security, due to crop failure caused by high unfavorable rainfall. The duration of the rainy season, which is occurred only 3-4 months are compounded by dry-spell or waterlogging conditions, impact on the inevitable crop failures, continued by the vulnerability in food security in the rural communities. Irrigation plays an important role in addressing dry-spell or short drought conditions, while drainage has an important role in waterlogging conditions or saturated soil moisture conditions so that the plant will die. On the small island semi-arid region Indonesia, this important role is only possible when combined in the concept of rainwater management for agriculture, for a water conservation efforts that will ensure the availability of water for agricultural development to enhance food security. An analysis and design model of water-trap series, water management for agriculture system structure are to get clearer picture how important the role of irrigation and drainage system in the rainwater management for agriculture as an climate change adaptation. It can be concluded that the climate change adaptation in small islands semi-arid region Indonesia, the concept of rain water management for agriculture strongly support an important role of irrigation and drainage for agricultural development. Key word: irrigation and drainage, dryspell and waterlogging, rainwater management for agriculture, climate change adaptation.

KEKERINGAN SEMAKIN SERING TERJADI PADA DAERAH IRIGASI DI JAWA TENGAH Waluyo Hatmoko1, R. Wahyudi Triweko2 dan Iwan K. Hadihardaja3 1

Kandidat Doktor Teknik Sipil di Universitas Katolik Parahyangan, Bandung, whatmoko@yahoo.com Dosen Teknik Sipil, Universitas Katolik Parahyangan, Bandung 3 Dosen Teknik Sipil, Institut Teknologi Bandung, Bandung 2

ABSTRAK The frequency of occurrence of drought in Central Java has been increases. This hypothesis was tested with the historical data of river flow at irrigation weir and reservoirs in Central Java, as well as historical data of the drought affected irrigation area in Central Java. To quantify the drought in the irrigation weirs two drought indices are applied: the drought index based on river discharge, and the drought index based on Factor-K, a ratio between supply and water demand in the weir. The reservoir drought index is applied to compare different drought in three different reservoirs. It is concluded that both the hydrological drought indices in the irrigation weirs, in the reservoirs, as well as historical data on irrigation area affected by drought, indicates that the current trend of droughts are becoming more frequent. Keywords: drought, hydrological drought, drought index

THE USE OF SATELLITE-DERIVED RAINFALL DATA AND DIGITAL ELEVATION MODEL FOR ESTIMATION OF RAINFALL OVER SCANTILY GAUGED BASINS Revalin Herdianto1,a,b, Bambang Istijono2,a, Dalrino1,a, Adek Rizaldi3,a,

ABSTRACT In areas where rainfall gauge are sparse such as in West Sumatera, estimation of irrigation water may be problematic. The computation of irrigation water uses data either from stations that may be far from design areas or from a single station. Area averaging schemes can be of erroneous if the stations and the irrigated areas vary in topographic and wind. The Tropical Rainfall Monitoring Mission (TRMM) has long been used as an auxiliary data for both prediction of rainfall in ungauged basins and for simulation in hydrological models that require spatially distributed rainfall input. It has an advantage in that the data are available in 3 hour interval, which minimizes the effect of wind in data acquisition. However, the TRMM radar presents off-the surface information that is subject to distortion. In addition, itâ&#x20AC;&#x2122;s fairly large pixel size may override topographic variations within a pixel. Therefore, before used for practical purposes, a validation is essential. We use TRMM data over a catchment in Kuranji watershed in City of Padang from year 2000 to 2009. The Kuranji catchment is located at 0.92 S and 100.47 E with Batang Kuranji being the main river flowing to the West in the Indian Ocean. This catchment is selected due to available rainfall stations for validation. In addition, rapid land use change in the upper catchment since year 1985 has altered irrigation requirement and stream flow. These conditions need an updated irrigation scheme for future water allocation and a watershed land use management. We use TRMM in 0.5o x 0.5o grid size in daily temporal resolution from TRMM PR, in order to match ground-measured rainfall. Digital Elevation Model (DEM) of the catchment and its surroundings is downloaded from SRTM (Survey Radar Topographic Mission) CGIAR-CSI in 90-m resolution. The Kuranji catchment is extracted from its surroundings using ArcGIS(TM). The TRMM pixels are mosaicked with the catchment DEM to build layers of topographic and rainfall information. Then the TRMM mosaic is used to extract daily rainfall data to make time series of rainfall. Ground measured data are gathered from an in-catchment station at Gunung Nago, and NOAA data at off-catchment station (Tabing). Validation is conducted with a neighboring catchment of Sumani. These stations are suitable to study the orographic effect on rainfall in the upper catchment. Preceding studies show that high rainfall is over estimated and low rainfall is under estimated. In our study, we find that orographic effect is more prominent during high rainfall that confirms the previous findings. Keywords: TRMM, DEM, rainfall, topographic 1 Department of Civil Engineering, Politeknik Negeri Padang 2 Department of Civil Engineering, Andalas University 3 Ka. Balai Wilayah Sungai V Sumatera a Anggota KNI-ICID b Corresponding author

POTENSI IRIGASI PIPA UNTUK PENINGKATAN INDEKS PERTANAMAN (STUDI KASUS : DESA CIKURUBUK, KEC. BUAHDUA, KAB. SUMEDANG) Dadan Rahmandani 1 , Wildan Herwindo1 , Subari1, dan Dadang Ridwan1 Balai Irigasi, Pusat Litbang Sumber Daya Air, Badan Litbang PU Jl. Cut Metia Kotak Pos 147 Bekasi-17113, dankridwan@gmail.com.

ABSTRACT Cikurubuk village, Buahdua sub District, Sumedang District is one area which has abundant water resources. However, the water resource is not well managed specifically to meet the needs of agriculture. The farmers in Cikurubuk still utilize conventional irrigation with open channels to fulfill the needs of water in their agricultural land. The use of this irrigation causing a lot of water is wasted along distribution, because trase of canal is porous, so the water cannot be used optimally in irrigation. During the dry season, water is wasted even more because the water is quickly absorbed into the ground before reaching the intended location, moreover, the location is far away from water sources. Such conditions causing the agricultural land in Cikurubuk only capable planted one time for paddy and one time for cash crops in a year or have 150 in cropping index (CI). This paper discuss about the corporation for betwen open channel irrigation (existing) and pipe line irrigation at the location of the study , then compared with the availability of water . thus obtained potential water savings that can be used to increase the cropping index through agricultural intensification . Addressing research results that can improve the efficiency of irrigation pipe irrigation water use at the study site. It is seen from the simulation water balance , irrigation pipe that can increase cropping index (IP) or the location of the study to 250 in one year can grow rice and pulses twice once with the same water availability. Keywords: pipeline irrigation system, open channel, cropping index

UNDERGROUND STREAM AND TELAGA WATER HARVESTING STRATEGY IN GUNUNGKIDUL REGENCY Rr. Vicky Ariyanti, ST, M.Sc1, M.Eng, Noorpratomo Wirawan, ST. Kuji Murtiningrum, ST, M.Tech. e-mail: vicky_ariyanti@yahoo.com

Gunungkidul Regency in Yogyakarta Special Province is blessed with specific land properties. Its land is mostly Karst area with porous land stratification. Most of its part is now being converted into Gunung Sewu Geopark Area, an area so specific that is concerned as World’s Geological Heritage. This specific character made the regency as a rich source for cement production as building materials and at the same time made its water potency became scarce. This water scarcity has made the area less fertile and always face annual drought. From several studies conducted, rainwater is actually quite high; on average the regency received 2000 – 3500 mm precipitation annually. However, the porous Karst character made most of this water runs into its underground streams. These streams are located averagely 100 m below the ground. Drainage intervention on this potency has made water available for rural community livelihood through technological approaches. Other than that, natural small reservoirs or called Telaga, also help to improve their livelihood. These reservoirs are made of convex ground forms with base of natural waterproof layer, where rainwater can be stored above the ground during dry season. Drainage interventions also technologies in this regard are the used to harvest water. Both of these interventions are specific strategies used for the regency. Water from the underground streams can be transferred to other drought areas. Where as water sharing has been common practice for the Telaga strategy. On these grounds, writers would like to explain further how both of these strategies works and how they improve Gunungkidul’s rural livelihood and to help secure food production, usually non-rice production during dry season and rice during rainy season. These specific strategies made it a special treatment on water resource management for the regency and also to support food security and rural livelihood.

Keywords: Karst, Interventions, Underground Streams, Telaga

Balai Besar Wilayah Sungai Serayu Opak, Ditjen SDA, Kementerian Pekerjaan Umum

PENERAPAN HYDROPOWER DI KAWASAN KARST UNTUK JARINGAN IRIGASI AIR TANAH Pulung Arya Pranantya, ST. MT. Peneliti Pusat Penelitian dan Pengembangan Sumber Daya Air Kementerian Pekerjaan Umum Jl. Ir. H. Djuanda no.193, Bandung poel_pranantya@yahoo.com

Ahmad Taufiq, ST. MT. Peneliti Pusat Penelitian dan Pengembangan Sumber Daya Air Kementerian Pekerjaan Umum Jl. Ir. H. Djuanda no.193, Bandung

ABSTRACT Water is the most important human basic necessity. Due to the increasing of population the water requirement raised in the first place. One of the very limited water availability is karst area, particularly in the surface. In order to solve the problem, in Wonosari Yogyakarta Special Region, a prototype of underground hydropower has been built. By creating underground dam, the water energy can be used as an energy source for hydropower utilization. Hydropower installation is a source of energy to drive the pump turbine, so that will meets the needs of people on the surface. For agriculture, in karst area, water supplies are also required. It is necessary to have sufficient water resources in the effort to obtain food self-sustaining. Water is a main issue in karst areas because of the high requirements but their provision costs are higher as well. Water supply with high cost has been carried out with the use of Groundwater Irrigation Network (JIAT), as many has been done in Lombok and Gorontalo. Through this technology, the provision of irrigation water in karst regions that promises economical value can be achieved. Keywords: Cave, underground river, JIAT, hydropower, Gunung Kidul ABSTRAK Air merupakan kebutuhan manusia paling utama. Seiring bertumbuhnya penduduk, maka kebutuhan air baku ini meningkat dengan ketersediaan yang semakin terbatas. Daerah karst merupakan salah satu daerah dengan ketersediaan air yang sangat minim di permukaan. Di Wonosari - Daerah Istimewa Yogyakarta, sudah dibangun prototpe pemanfaatan potensi sungai bawah tanah menggunakan hydropower. Potensi sungai bawah tanah ini akan dibendung dan dimanfaatkan sebagai sumber energi untuk instalasi hydropower. Instalasi hydropower ini merupakan sumber energi untuk menggerakkan pompa dari turbin, sebagai sarana pemenuhan kebutuhan masyarakat di permukaan. Air baku di daerah karst merupakan kebutuhan primer di bidang pertanian. dalam upaya penggalakan swasembada pangan, maka diperlukan sumber-sumber air yang cukup memadai. Air merupakan isu utama di daeah karst karena kebutuhannya yang tinggi dan penyediaannya membutuhkan biaya yang tinggi pula. Penyediaan air dengan biaya tinggi telah banyak dilakukan dengan pemanfaatan Jaringan Irigasi Air Tanah (JIAT), seperti banyak dilakukan di Lombok dan Gorontalo. Melalui teknologi ini maka penyediaan air irigasi di daerah karst denga harga ekonomis dapat diwujudkan. Kata Kunci : Gua, sungai bawah tanah, JIAT, hydropower, Gunung Kidul

OPTIMALISASI POLA TANAM DAERAH IRIGASI KLAMBU KANAN DAN KLAMBU WILALUNG Fuad Kurniawan1, Indra Bangun2, Suseno Darsono3 dan Pranoto Samto A4 1,2

BBWS Pemali Juana, Jl. Brigjen S. Sudiarto 375 Semarang, rakhmaiwan@yahoo.com Pusat Studi Bencana Universitas Diponegoro, Jl. Prof. Sudharto Tembalang Semarang 4 Jurusan Teknik Sipil Universitas Diponegoro, Jl. Prof. Sudharto Tembalang Semarang 3

ABSTRACT Klambu Kanan and Klambu Wilalung Irrigation Area located in the Jratunseluna River Basin is part of the Kedung Ombo system. Current cropping pattern is less optimal due to inundation during the growing season arrives, so it appears the demand of farmers for demanding early schedule change cropping patterns. Changes in cropping patterns schedule affects the availability of water in irrigation systems Kedung Ombo. This study was conducted to determine the most appropriate cropping patterns to natural conditions. Keywords: Irigasi Klambu Kanan, Irigasi Klambu Wilalung, RIBASIM, cropping patterns.

DAERAH IRIGASI TEKNIS TOMMO BERPOTENSI MENJADI LUMBUNG PADI SULBAR DENGAN MEWASPADAI PERUBAHAN IKLIM DUNIA M. K. Nizam Lembah1, M. Asdin Tholib2 , Sumardji3 , M. Taufan4 , Subandi5, dan Rita Mulyati Malik6 1

Subdit PP Wilayah Barat, Dit Sungai dan Pantai, Ditjen SDA, Jakarta, mk_nizam.04@yahoo.com.sg Kasatker PJPA Sulbar, BBWS Pompengan Jeneberang, Ditjen SDA, m_asdin@gmail.com 3 PPK Irigasi dan Rawa I Sulsel, BBWS Pompengan Jeneberang, Ditjen SDA, sumardji@ymail.com 4 PPK Sungai dan Pantai II, BBWS Pompengan Jeneberang, efan031@yahoo.com 5 Konsultan Perorangan SDA, BBWS Pompengan Jeneberang, Makassar, Subandi_me@yahoo.co.id 6 Staf BBWS Pompengan Jeneberang, Makassar, rmulyati@yahoo.com 2

ABSTRACT One of Technical irrigation in Tommo District of Mamuju regency of West Sulawesi is Tommo technical irrigation. It has 2.500 Ha. Global climate change in this irrigation area causes the fail of cropping. The Tommo river can not sustainable so no secure water for Tommo irrigation. The Government has construct irrigation structure like Tommo weir, fasilitated by several opened channels to irrigate raw water from the Tommo weir to the field. To solve the fail cropping they try to pump water from the Tommo river but the result is not sufficient. Much money must be paid for oil water-pump. To antisipate the global climate change by cheap cost by developing of the conservation and fruit trees. Teoritically, the developement of fruit trees is good way for increasing of their lifelihood and the trees can secure water and rural community each other. Keywords: global climate change, development of conservation, secure water and rural community

INTEGRATION OPPORTUNITIES BETWEEN IRRIGATION MANAGEMENT AND COOPERATIVE FARMING IN INDONESIA Case studies: Cihea Irrigation Area, Cianjur and Petung Swampland, East Kalimantan Nanang Rianto1, FX Hermawan Kusumartono2 1

Researcher in Sociology, Water Resource Experimental Station, Research and Development Center for Social Economy and Environment, Research and Development Agency, Mistry of Public Works, Sapta Taruna No. 26 Komplek PU Pasar Jumat, South Jakarta. nanang.rianto@gmail.com 2 Researcher in Social and Policy Planning, Water Resource Experimental Station, Research and Development Center for Social Economy and Environment, Research and Development Agency, Mistry of Public Works, Sapta Taruna No. 26 Komplek PU Pasar Jumat, South Jakarta. fxhermawan@yahoo.com

ABSTRACT Paradoxical development of infrastructure and agricultural sector in Indonesia seems not yet to cease in the near future. Classic problem from budgetary limit for construction thus operation and maintenance (OP) to low agricultural productivity still hinder these two sectors. Various policies have been tried to solve the problem, from the OP participatory financing in infrastructure side to corporate farming models which implemented to overcome the financial problem, quality of human resources, and agricultural technology. However, these models likely lead to the dominance of the private sector so that farmers tend to be marginalized. Reflecting the advantages and disadvantages of various previous programs, efforts to improve the optimization of current farm management was implementing the agricultural management program through partnerships called cooperative farming (CF) as an alternative. One of cooperative farming requirements is tertiary irrigation network as a support system and essential pre-condition. Considering the agricultural productivity is determined by water optimacy from irrigation, this research was more emphasis on tertiary irrigation management as a supporting element of cooperative farming . It raises the question, how the condition of OP irrigation to support cooperative farming in the research area? Various issues examined from the capacity of the people in the OP irrigation management model that has been running by water uses association (WUAâ&#x20AC;&#x2122;s), the existence and effectiveness of the WUAâ&#x20AC;&#x2122;s, and designing the tertiary irrigation management model to support cooperative farming model. The problems mentioned above, examined using mixed methods. Quantitative methods used to obtain measurable data regarding the condition of OP irrigation, then supplemented with qualitative methods to get a more in-depth explanation of related issues. The results showed that there is a great opportunity to integrate the patterns cooperative farming management and irrigation OP due to the large chances for complementarity between the two activities. Keyword: Irrigation, operation and maintenance, cooperative farming , participatory, farmer

SUPLESI AIR UNTUK BUDIDAYA PADI DI LAHAN RAWA LEBAK DENGAN SISTEM IRIGASI CURAH WATER SUPPLETION FOR RICE CULTIVATION IN LOWLAND SWAMP USING SPRINKLER IRRIGATION SYSTEM Edward Saleh1, Chandra Irsan2 dan M. Umar Harun2 1

Dosen Program Studi Teknik Pertanian, Fakultas Pertanian Universitas Sriwijaya. Kampus Unsri, jalan Palembang â&#x20AC;&#x201C; Indralaya, Sumatera Selatan 30662. Email : edusaleh@yahoo.com 2 Dosen Program Studi Agroekoteknologi, Fakultas Pertanian Universitas Sriwijaya. Kampus Unsri, jalan Palembang â&#x20AC;&#x201C; Indralaya, Sumatera Selatan 30662

ABSTRACT Lowland swamp is an area that periodically has flooded and dry conditions. Flooding is due to blockage of rainfall water drainage, river water uprising or tidal phenomenon effect. Lowland swamp of Ogan Keramasan in South Sumatra is flooded land due to blockage drainage and affected by high and low tidal fluctuation, but rainfall water is quickly drained into soil during dry season. The condition available in this lowland swamp has potential to produce rice in order to fulfill food supply. Therefore, productivity of this land in the future can be increased through water management improvement to increase rice planting intensity. Current planting pattern in this land is one time a year. Constraints for planting intensity more than one time a year are excessive water during wet season and lack of water during dry season. This study objective was to increase water use efficiency in lowland swamp so that planting intensity can be increased from one time into two times a year. Efficiency improvement was conducted by water suppletion thrrough sprinkler irrigation system on rice planting during dry season. The method used in this study was technical and agronomical analyses followed by field experiment. The results showed that two times planting for rice can be conducted at lowland swamp during dry season by using water suppletion with sprinkler irrigation system. This was shown by technical analysis in term of crop water requirement and irrigation water requirement as well as agronomical indicator and yield. In conclusion, two times planting for rice can be done by using water suppletion with sprinkler irrigation system. This technique can increase irrigation water use efficiency and decrease water losses due to drainage. Keywords : lowland swamp, rice, planting intensity, efficiency

DEVELOPMENT INSTRUMENT OF QUANTITATIVE ASSESSMENT OF IRRIGATION MANAGEMENT PERFORMANCE Sahid Susanto 1 and Sigid Santosa 2 1

Staf member at Faculty of Agricultural Technology, Gadjah Mada University, Yogyakarta. s_susanto@ugm.ac.id 2

Staff member at Main Office of Serayu-Opak River Basin Development, J. Solo, Yogyakarta sigidsantosa@yahoo.com

ABSTRACT Instrument penilaian kinerja manajemen irigasi dikembangkan untuk mengevalusi kinerja operasi dan manajemen sistem irigasi. Instrument mengandung tiga elemen indicator: (i) kinerja dasar sebagi keluaran yang merefleksikan kinerja manajemen irigasi dan produktivitas; (ii) indicator tambahan sebagai masukanyang merefleksikan kondidi infrastruktur dan manajemen irigasi; dan (iii) indicator dampak yang merefleksikan efek social, lingkungan dan keberlanjutan. Semua indikator ditrasformasikan dalam bentuk skor dengan faktor pemberat. Nilai skor bergerak dari 1 sampai 4. Instrument diberlakukan di system irigasi Serayu, Jawa Tengah dengan luas oncoran 20.795 ha. Tiga daerah irigasi yang bermuara di tiga saluran induk diambil sebagai sampel. Skor akhir dihitung dari tiap sampel berbasis saluran sinduk, sekender dan tersier. Digunakan empat tingkat kondisi kinerja manajemen irigasi: sangat baik, baik, cukup dan kurang. Hasilnya menunjukkan bahwa instrument dapat mendiskripsikan keadaan sesungguhnya kinerja manajemen irigasi. Nilai total skor yang diperoleh di tiap daerah oncoran kemudian disandingkan dengan nilai prasarat yang harus dipenuhi dalam mencapai optimal kinerja dalam bentuk kuadran. Posisi UPT Cilacap dan UPT Kroya masuk dalam kuadran I yang merefleksikan kondisi kinerja manajemen irigasi sangat baik tetapi belum optimal, sedangkan UPT Sumpiuh masuk dalam kuadran II, merefleksikan kondisi baik tetapi belum optimal. Beberapa masukan untuk perbaikan menuju manajemen yg optimal didiskusikan. Key word: instrument penilaian, kinerja manajemen irigasi, elemen indikator

PERKIRAAN HUJAN EFEKTIF UNTUK KEBUTUHAN AIR IRIGASI MEMANFAATKAN DATA HUJAN SATELIT TRMM (TMPA 3B42RT) PADA WILAYAH KURANG DATA LAPANGAN ESTIMATION OF EFFECTIVERAINFALL FORIRRIGATIONREQUIREMENT WITH UTILIZINGTRMMSATELLITERAINFALL DATA(TMPA 3B42RT) ONLACKINGAREAS OF FIELDOBSERVATIONDATA

IRFAN SUDONO1, R. R. E. VERNIMMEN2, MARASI DEON JOUBERT1 1

Peneliti di Balai Irigasi, Pusat Litbang Sumber Daya Air,KementerianPekerjaan Umum Expert of DroughtEarly Warning System (DEWS)inDeltares, P.O. Box 177, 2600 MH, Delft, The Netherlands email :irfansudono@yahoo.com 2

ABSTRACT Postulate of irrigation efficiency in irrigation modernization will increase due to performance measurement service will change from agricultural Ton/ha to water productivity kg/m3. Estimation of amount of water for rrigation supply is calculated based on the factors that influence water needs for crops , including land preparation, consumptive use, percolation, seepage , and reduced by effective rainfall. This paper will lead to alternative determination of effective rainfall in their influence on the calculation to support of irrigation water requirement. Although in the whole area of Indonesia has installed approximately 2500 station rainfall observations, but density is not uniform, in thewestern region(Java Island good and Sumatra relatively good) while in the middleless. And especially to the eastis veryless, morever daily/monthly rainfall data on many outside Java is not continuous and very rarely with long years of data (over 10 years) which is a requirement in calculation of determining of effective rainfall. On the other hand, the provision of global satellite rainfall data is already available in more than 10 years , one of which is sourced from the TMPA 3B42RT TRMM (Tropical Rainfall Measuring Mission. NASA - JAXA, is designed to measure rainfall (precipitation in the tropics and its variations from low inclination orbit) , TRMM satellite have been collected since 1998 and are available as a real time product since early 2002, these data have also been shown adequate for drought monitoring in Indonesia.Based on above, it is necessary to consider the utilization of satellite data for the calculation effective rainfall, especially for areas with sparse ground observation station.Calculation of effective precipitation begins with determination of areal rainfall in the catchment area of irrigated areas based on the weightedof grid cell selected multiplied by the amount of rain on the grid cell, then at each time stepsetis transformed by Box-Cox transformation to normality and find quantified for probability of 20%. Has been made an example of effective rainfall for some areas especially in lacking areas of observation data Keywords: EffectiveRainfall, Rainfall observation station, TRMMsatellite data, Box-Cox transformation, Probability

WATER AVAILABLE OF SECURE FOOD (CASE STUDY KURIK VILLAGE – MERAUKE REGENCY, PAPUA PROVINCE) Kesya Ratna Rapa Papua River Basin Organization *kesya.pu@gmail.com

ABSTRACT Kurik village farming has been known since 1950 with it’s product that is called “Kurik paddy”. It had been promoted by the Dutch Goverment around Merauke Regency and The Asia Pasific Area at that time. Nowadays the Central Goverment under Directorate of Water Resourses, The Ministry of Public Work together with The Ministry of Agriculture has pointed Merauke Regency as the central of food production in Eastern Part of Indonesia , well known as MIFEE (Merauke Integrated Food Energy and Estate) Programme. The total area of the potential area for agricultute at Merauke around 2,5 million hectare. Base on Agro-Ecosistem Zone (AEZ) (Sosiawan 2006), had indicated that 1.913.304 Ha (98,8 %) still had not developed , and there are 23.987 ha (1,24 %) had been productived already. The Grand design of MIFEE have several concept, such as :  Land Management for each Cluster ;  Community participation ;  Public Private Partnership (PPP) ;  Increasing food production, livelifood, livestock, nature fertilizer . About 50 % of the total area of Kurik village as a part of Mereuke regency consist of tropical swamps. Water availability is enough on the rainy season , but very limited water on September until December, so it needs storage for water availability with long storage and pond storage to provide enough water on dry season. Base on half monthly water available analysis there are 58.632.366 m3 total volume of surplus water and there are 47.207.626 m3 of deficit water. It needs 510 Ha storage wide, which is 167.5 ha for storage wide existing and there are 342.5 ha to built as new storage . And, there are 25 ha must be planned and design at Kurik III and Kurik V. Ofwhich the area needed for the long storage is about 50 ha, and 40 long storages and 7,5 ha. To store the water into the pond storage or long storage, the continuous discharge ( low flow) needed is 0,86 m3/sec from Kurik Swamp and 0,43 m3/sec from Keramati Swamp. For discharge control and water level control the system must be integrated with water gate, pumping system at primary channel, pond storage and long storage, that will have multiply function as a water storage at dry season and as a flood control on rainy season. This system could increase food production by the farmer two until three times harvest in a year, as a national achievment to secure food for eastern part of Indonesia. Keywords: swamp, long storage, pond storage

PENGEMBANGAN DAN PENGELOLAAN IRIGASI PARTISIPATIF DI PROVINSI JAWA TENGAH Sri Purwanto Kepala Balai PSDA Bengawan Solo

ABSTRAK Pengembangan dan pengelolaan sistem irigasi diselenggarakan secara partisipatif, terpadu, berwawasan lingkungan hidup, transparan, akuntabel, dan berkeadilan, dilaksanakan oleh Pemerintah, pemerintah provinsi, atau pemerintah kabupaten/kota melibatkan semua pihak yang berkepentingan dengan mengutamakan kepentingan dan peran serta masyarakat petani. Pengembangan irigasi di Provinsi Jawa Tengah, dengan melakukan pembangunan bendungan dan bendung yang sedang/akan dilaksanakan, diantaranya : (1) Bendungan Pidekso, (2) Bendungan Gondang, (3) Bendungan Jlantah, (4) Bendungan Cileuweung/Kuningan, (5) Bendung Cikawung, dan (6) Bendung Progopiston. Pengelolaan irigasi di Provinsi Jawa Tengah, terdiri wewenang dan tanggungjawab Pemerintah, Pemerintah Provinsi Jawa Tengah, dan Pemerintah Kabupaten/Kota, meliputi kegiatan operasi jaringan irigasi, pemeliharaan jaringan irigasi dan rehabilitasi jaringan irigasi. Partisipasi masyarakat petani/P3A/GP3A/IP3A dalam kegiatan pengembangan dan pengelolaan jaringan irigasi primer dan sekunder dalam pekerjaan tertentu sesuai dengan semangat kemitraan dan kemandirian, dilaksanakan berdasarkan prinsip : (1) sukarela dengan berdasarkan hasil musyawarah dan mufakat; (2) kebutuhan, kemampuan, dan kondisi ekonomi, sosial, dan budaya masyarakat petani/P3A/GP3A/ IP3A di daerah irigasi yang bersangkutan; dan (3) bukan bertujuan untuk mencari keuntungan. Pelaksanaan kegiatan pengembangan dan pengelolaan irigasi yang dapat dilaksanakan P3A/GP3A pada Dinas PSDA Provinsi Jawa Tengah, terdiri (1) Pelaksanaan Pekerjaan dengan Kerjasama Operasi terdiri Kerjasama dengan Kabupaten/Kota dan Kerjasama dengan GP3A/IP3A; (2) Pelaksanaan Pekerjaan dengan Swakelola, dan (3) Pelaksanaan Pekerjaan dengan Kontraktual. Kata Kunci : Pelaksanaan Pengembangan dan Pengelolaan irigas; melibatkan semua pihak yang berkepentingan; partisipasi masyarakat petani/P3A/GP3A/IP3; dengan kerjasama operasi, swakelola, dan kontraktual.

MODEL OF WATER ALLOCATION IN KEDUNG OMBO DAM S. Imam Wahyudi1, Henny Pratiwi Adi1, Sri Mulyani2 1

Dosen Jurusan Teknik Sipil, Universitas Islam Sultan Agung, Jl.Raya Kaligawe KM 04, Semarang, Indonesia, siwahyudi@yahoo.com 2

Balai Bahan & Perkerasan Jalan, Balitbang, KemenPU, Bandung. Indonesia

ABSTRACT Kedung Ombo dam water used primarily for irrigation, then part of water allocation used for domestic needs (water drinking) as well as power plants. The dam has irrigation coverage area more than 60,000 hectares where are some regencies in Grobogan, Demak, Pati and Kudus. Complexity of water distribution need to optimal model of the water allocation. This study aims to get a water allocation model based on supply and demand of water in each weir or Irrigation Area. Methods used are to collect the data of water reservoirs release, supply of some rivers and water needs plan in each weir (irrigation area). The Irrigation Area are Sidorejo, Sedadi and Klambu and the domestic water using (PDAM). Water allocation model is planned each two week or a half month, base on Kedungombo Reservoir release, additional flow of the river in the downstream of the reservoir, each irrigation area, drinking water requirements, and irrigation pumps official. The water availability in the reservoir controlled on the maximum reservoir water elevation +90 m and a minimum elevation +67.5 m. Simulation model of water allocation is made in the form of tables and flow chart (scheme) every 2 weeks. Water needs can be fulfilled 100% (k factor = 1) only in the rainy season, then factor k = 0.5 to 0.6 at some other season. The water allocation use different cropping periods and turn inning of water distribution in the irrigation area.

Keywords: reservoir of dam, water availability, water allocation, irrigation

MODEL APLIKASI HEC-HMS DALAM PENGENDALIAN BANJIR SISTEM DAS BANDUNG, KOTA PALEMBANG (PENGENDALIAN BANJIR SISTEM DAS SUNGAI BANDUNG DENGAN APLIKASI HEC-HMS DAN HEC-RAS) Abdul Muis1, Agung Setiono2, dan Henggar Risa Destania3 1

BBWSS VIII, Ketua Komisi WG on use of poor quality of water for iirigation, technology and research uptake KNI-ICID Sumatera Selatan 2 Anggota KNI-ICID 3 BBWSS VIII, Komisi Provincial Profesional KNI-ICID Sumatera Selatan, email: henggar_risa.syarif@yahoo.co.id

ABSTRAK Daerah Aliran Sungai (DAS) Bendung dengan luas 15,4 km2 merupakan salah satu drainage system yang ada di Kota Palembang dengan panjang sungai sekitar 5,4 km. Sungai Bendung merupakan sistem major drain yang bermuara di Sungai Musi. Ketinggian rata-rata lahan di DAS Bendung adalah berkisar antara +2,0 m sampai +18,0 m dari permukaan air laut. Dalam melakukan penanganan banjir di DAS Bendung. Alternatif penanganan tersebut antara lain adalah dengan melakukan penanggulan pada segmensegmen yang mengalami limpasan air akibat banjir dan melakukan penggalian pada lokasilokasi yang mengalami pendangkalan/pada sekmen-sekmen saluran yang kapasitasnya sudah tidak mampu lagi menampung debit rencana dengan melakukan pemodelan hidrologi dengan aplikasi model HEC-HMS dan HEC-RAS. Setelah dilakukan pemodelan hidrologi, maka hasil pemodelan hidrologi DAS Musi di Hilir Sungai Ogan akan dijadikan boundary condition (BC) hulu Sungai Musi, sedangkan hidrograph hasil pemodelan hidrologi DAS Bendung akan dijadikan boundary condition dan lateral inflow pada sistem Sungai Bendung.

Kata kunci : hidrograf, HEC-HMS, HEC-RAS, Boundary condition, lateral flow

ANALISIS KETERSEDIAAN AIR DAN SEDIMEN DI HULU DAS JENEBERANG Analyzing Available Water and Sediment in the Upper Jeneberang Watershed I. Latifah, M. Y. Purwanto dan N. H. Pandjaitan Departemen Teknik Sipil dan Lingkungan, Institut Pertanian Bogor (IPB) (Department of Civil and Environmental Engineering, Bogor Agricultural University) Jl. Raya Dramaga, Kampus IPB Dramaga, Bogor 16680 email: ifahlatifah87@gmail.com, yan_tta@yahoo.com, noraherdiana12@gmail.com

ABSTRACT The application of hydrological models is increasing in response to rising demands of appropriate water management strategies to cope future water challenges, especially for agricultural activities. The hydrological model is a simplification of reality and therefore there is always some degree of associated risk or uncertainty. Proper calibration and evaluation of model is necessary to recognize which aspects of the prediction works well and which one needs improvement. It is therefore important that the modelers quantify the uncertainties and thus represent the reliability of model predictions before it is used in decision making process. A popular semi-distributed hydrological model, Soil and Water Assessment Tool (SWAT), is used to perform hydrological analysis of a watershed. This study was aimed to identify parameter-parameter of SWAT model for analyzing discharge and sediment yield in the upstream area of Jeneberang watershed. The calibration and validation results indicated that SWAT model was a reasonable tool to simulate the impact of environmental change on discharge and sediment yield in this watershed. Based on the calibration model, the responses of hydrology and sediment yield to climate change were simulated. In this integration, GIS supplies input data included elevation, soil properties, land use and weather data and creates graphical user interface for SWAT, while SWAT operates input data, delineates watershed, simulates different physical processes, displays output data as discharge and sediment. Calibration process was done by adjusting parameters using Algoritma SUFI2 and identified 19 sensitives parameters. Simulated daily discharge matched the observed values statisfactorily (R2 = 0.82 and NS = 0.64). The value of water discharge ratio (Qmaks/Qmin) was lower than 50, and suspended sediment in the upper Jeneberang watershed had lower value than 400 mg/l. It means that the water were good for fishery and husbandry.

Keywords: calibration, discharge, Jeneberang watershed, sediment, SWAT model

PENGAMANAN AIR DI PULAU-PULAU KECIL Happy Mulya1 dan Robert J Kodoatie2 1

Kepala Balai Papua, Dit.Jen. Sumber Daya Air Kementrian Pekerjaan Umum, Jl. Sumatera no. 15 Dok IV Jayapura, maggi_iwm@yahoo.com

Dosen Jurusan Teknik Sipil, Universitas Diponegoro, Jl. H. Prof. Sudarto, SH Semarang, rjkodoatie@hotmail.com

ABSTRACT Indonesia is the largest archipelago in the world that have ± 17,504 large and small islands. Island with an area greater than 100.000 km2 consist of 5 islands, namely: Kalimantan, Sumatra, Papua, Sulawesi and Jawa. Small islands with an area of less than 2.000 km2 island is as much ± 17.473 or ± 99,82 % of the whole island in Indonesia. Limitation of water resources both surface water and groundwater in small islands due to the limited land. So that when it rains, water flows quickly and thrown into the sea and only a small proportion soak into the soil. Based on the map of groundwater basins that have been defined in the form of rules, almost all of the small islands ( 99,80%) did not have a ground water basin (CAT) and only 0,02% have a CAT. Understanding does not mean not having a CAT (Non) CAT. Descriptions are not having groundwater hydrogeological boundary, has no particle area and the area of land and water releases do not have a whole aquifer. Therefore, do not have a ground water (groundwater). Water seep into the ground only to be soilwater and no percolation. To meet the water needs of the small islands just rely on surface water sources and soilwater. Water sustainability is more sensitive than the area that has the CAT so that water security (secure water) in the islands became a very important factor . Population growth continues to increase resulting in small islands faced serious threat of environmental degradation and destruction of ecosystem depletion region and the main water supply or the water crisis. In addition to the need for land for development, housing, land and other means of business as a consequence of population growth led to an increase in space at the same time decrease woke green open spaces where living water. In this paper will consider how the condition of the existing water resources in small islands of which include water balance, physical condition and layout. This paper proposes the management of water resources of small islands associated with securing water so that the island can be developed based on the optimization of water balance . Key words: small islands, Non-CAT, Water Resources Management, Water Security

ANALISIS POTENSI PENGENDALIAN MUKA AIR TANAH DENGAN MENGGUNAKAN SISTEM DRAINASE BAWAH TANAH DALAM MENDUKUNG PENINGKATAN INDEK PERTANAMAN DI RAWA PASANG SURUT Bakri, Momon Sodik Imanudin, Masreah Bernas dan Johanes Peneliti pada PUR PLSO-Universitas Sriwijaya Email: ppmal_unsri@yahoo.co.id

ABSTRAK Permasalahan utama dalam pengelolaan lahan pasang surut adalah sulitnya mengendalikan air sesuai kebutuhan tanaman. Kelebihan air sering dijumpai di musim hujan dan sebaliknya kekeringan di musim kemarau. Sejauh ini indek pertanaman sebagian besar baru 100%, kurang dari 15% lahan bisa ditanami dua kali. Untuk itu pengendalian muka air adalah kunci yang harus dikuasai petani. Pengendalian muka air sejauh ini masih menggunakan sistem drainase permukaan, dan ternyata belum maksimal, oleh karena itu diperlukan kombinasi dengan sistem drainase bawah tanah. Penelitian bertujuan untuk menguji efektivitas pengaliran dari pipa drainase bawah tanah asal tanah liat, dan dibandingkan dengan bahan paralon dan produk pipa impor. Hasil pengujian pengaliran tanpa media pada pipa tanah liat menunjukan debit aliran 0,97 liter/detik. Selanjutnya pengujian terhadap media pasir menunjukan debit aliran pada pipa tanah liat, paralon dan pipa impor berturut-turut adalah 0,35; 0,25; 0,11 liter/detik. Dari kapasitas pengaliran produk pipa tanah liat sangat baik karena mampu mengasilkan debit tertinggi. Sementara pengujian terhadap ketahanan beban, produk pipa tanah liat masih rendah karena pecah pada tekanan 3 kg/cm2. Aplikasi di lapangan sistem drainase bawah tanah hanya efektif pada tanah dengan nilai keterhantaran hidroulik tinggi, daerah pasang surut delta Telang II sebagai pewakil memiliki nilai keterhantaran antara sedang sampai cepat dengan rata-rata 20 cm/jam. Oleh karena itu sistem drainase tanah bisa diterapkan pada kondisi lahan rawa pasang surut. Kata kunci: Sistem Drainase Bawah Tanah; Tanah liat; Pasang surut

APPLICATION OF FUZZY MULTIPLE ATTRIBUTE DECISION MAKING TO DETERMINE TECHNOLOGY OF DISCHARGE REPORT IN PROVINCIAL-AUTHORIY IRRIGATION SYSTEM Murtiningrum1, Noto2, Nur Rohmad2, Wisnu Wardana3, and Sigit Supadmo Arif3 1

Lecturer, Department of Agricultural Engineering, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Yogyakarta, tiningm@ugm.ac.id 2 Student, Department of Agricultural Engineering, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Yogyakarta 3 Lecturer, Department of Agricultural Engineering, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Yogyakarta

ABSTRACT Peraturan Pemerintah No 20/2006 tentang Irigasi menyatakan bahwa Daerah Irigasi (DI) dengan luas 1000 ha â&#x20AC;&#x201C; 3000 ha dan DI lintas kabupaten/kota menjadi kewenangan pemerintah provinsi. Kebijakan tersebut mengimplikasikan bahwa pemerintah provinsi harus mempunyai cukup petugas untuk melaksanakan tugas operasi irigasi di lapangan. Saat ini operasi irigasi menggunakan blangko sebagai teknologi untuk melaporkan debit sungai maupun saluran. Keterbatasan sumberdaya manusia yang dimiliki Provinsi Daerah Istimewa Yogyakarta menjadikan pengelolaan irigasi tidak dapat mengantisipasi permintaan informasi yang semakin cepat akhir-akhir ini. Penelitian ini bertujuan untuk menentukan bentuk teknologi untuk pelaporan debit. Alternatif yang ditawarkan adalah tetap menggunakan blangko, Short Message Service (SMS), komputer dengan pengumpulan data manual, komputer dengan pengumpulan data lewat internet, dan penggunaan Automatic Water Level Recorder (AWLR) yang datanya langsung terkirim. Kriteria yang digunakan untuk memilih alternatif teknologi adalah ketrampilan petugas, kemudahan digunakan, dukungan fasilitas, dana, dan efisiensi waktu. Metode yang digunakan untuk menentukan teknologi adalah Pengambilan Keputusan Multi Kriteria (MADM) yaitu Simple Additive Weighting (SAW), Weighted Product (WP), Technique for Order Preference by Similary to Ideal Solution (TOPSIS), dan Elimination Et Choix TRaduisant la realitĂ&#x2030; (Electre). Semua metode menunjukkan hasil yang sama bahwa urutan teknologi yang dipilih adalah SMS, blangko, komputer dengan pengiriman data manual, computer dengan pengiriman data internet, and AWLR. Kata kunci : Fuzzy MADM, operasi irigasi, pelaporan debit, daerah irigasi

MODEL PENGELOLAAN JARINGAN IRIGASI PIPA PADA LAHAN BERLERENG (STUDI KASUS PADA IRIGASI DESA CIKURUBUK BUAH DUA SUMEDANG) Dadang Ridwan1 & Dadan Rahmandani2 1),2)

Staf Balai Irigasi Pusat Litbang Sumber Daya Air Kementerian Pekerjaan Umum, Jl. Cut Metia Kotak Pos 147 Bekasi-17113, dankridwan@gmail.com.

ABSTRAK Cikurubuk village is the location of the case study in general is a slope land consists of paddy fields and hills, is located at an altitude of 500 to 600 m above sea level. This region is located in the vicinity of the Tampomas foothill in the region of Sumedang District. The purpose of study is to study models of pipe line irrigation management on sloping land, that is expected to be a pilot model in the management of a scale wider irrigation district. Based on the analysis and simulation with EPANET 2, irrigation water flow conditions in pipeline can flow by gravity, as well as secure enough to sediment deposition and tissue damage caused by excessive water flow pressure . Irrigation operating system designed with intermittent flow, were divided into 3 blocks irrigated with maximum irrigation duration between 10,1 to 24 hours on 5 daily irrigation interval . Setting and discharge measurement system can be controlled by the use of valves that has been installed on the outlet pipe in each field. The conservation of agricultural sloping land, is a very important factor in preserving the environment and optimization of productive land. In terms of maintaining the sustainability of pipe irrigation network, in addition to involving the full participation of farmers and foster a sense of belonging, principle of maintenance of irrigation network, has two aspects, they are: maintenance for preventive and maintenance after the occurrence of the damage .Recommended in terms of pipe irrigation investment costs are relatively quite expensive, that so need to consider (i) the selection of crops with high economic value, (ii) the selection of high-quality materials and (iii) management of irrigation dues. Keywords : irrigation management, pipe line, intermitten, slope land

PENGGUNAAN TEKNOLOGI INFORMASI DALAM OPERASI IRIGASI UNTUK MENDUKUNG EFISIENSI IRIGASI (USE OF INFORMATION TECHNOLOGY IN IRRIGATION OPERATION FOR SUPPORTING IRRIGATION EFFICIENCY) Aditya Prihantoko1 , Susi Hidayah1 , Marasi Deon Joubert1 1

Balai Irigasi, Puslitbang SDA Kementerian PU email: adityaprihantoko@yahoo.co.id; hidayahsusi@gmail.com; marasidj@yahoo.com

ABSTRACT Implementation of the irrigation network operation increasingly longer perceived decline in quality, due to lack of supporting infrastructure and adequate human resources. The filling of operation blank are performed manually on the printed forms mainly by actors operating at the level of irrigation ”mantri/juru” and ”ranting/pengamat”. The filling and distribution of blank undertaken in stages from one manager to another manager. Water requirement unit calculation also does not based on current climatology conditions, so it is possible the provision of irrigation water supplied incorrectly. Preparation of operating irrigation systems based on information technology needs to be done to improve the operating quality and efficiency of irrigation water. Conceptually, this system consists of three sub- systems, namely human resources, computer servers and support equipment. Human resources function to carry out the execution of the input and output of data, computer server as a processing and storage of data, while the support tool serves to help operation automatically inputing the data, such as automatic weather station (AWS) and the volumetric flow measuring devices. The preparation of this new system is currently at the stage of making a web-based application named Sistem Manajemen Operasi Irigasi (SMOI) Version 2, while the connection with tool support is still in the process of development. The test results were analyzed by the method of application of the Technology Acceptance Model (TAM) showed that ease and benefits variable showed variable value 78.6 % and 82.2 % in influencing user attitudes toward SMOI. Keywords:

Irrigation Network Operation, Information Technology, SMOI, Technology Acceptance Model

SELF SUPPORTING SMALL PUMP IRRIGATIONS IN THE EXISTING JATILUHUR IRRIGATION SYSTEM Mochammad Amron Commissioner of Jasa Tirta Public Corporation 2 Email: mochammad.amron@gmail.com

ABSTRACT Jatiluhur Irrigation System in West Java covering an area of 240,000 ha, gets water from Ir H. Juanda reservoir, one of the biggest reservoir in Indonesia, through West, North and East Tarum Canals. East Tarum Canal supply irrigation water up to Subang and Indramayu Districts which are consider other basin territory. Along the canal, many agricultural lands cannot be irrigated due to their elevation. Farmers then get together among themselves to pump water directly from canal to irrigate their land. This paper provides review of several rural community pumps in the area within Subang and Indramayu Districts. One pump system could actually irrigate around 200 ha of agricultural land which now become paddy area even in the dry season. Since irrigation water is provided by pump, efficient water allocation is highly needed to reduce cost. With efficient irrigation system and intensified farming practice could get higher productivity per ha. Rural community livelihood certainly could be improved with higher paddy production more than once planting season a year.

Keywords: small pumps irrigation system, food production, rural community

ANALISIS KELAYAKAN EKONOMI IRIGASI TETES DI DESA TEMIYANG DAN DESA PEJARAKAN Elias Wijaya Panggabean1 1

Peneliti Muda di Pusat Penelitian dan Pengembangan Sosial Ekonomi dan Lingkungan, Badan Litbang Kementerian Pekerjaan Umum, Jl. Sapta Taruna Raya No. 26 Komplek PU Pasar Jumat â&#x20AC;&#x201C; Jakarta Selatan, elias.wijaya@gmail.com

ABSTRAK Trial applications of drip irrigation in Temiyang village and Pejarakan village were The Ministry of Public Works support on the climate change adaptation. Drip irrigation is very suitable to be implemented on a dry area and difficult area to obtain water, however it is limitated on costs of high investment. Considering financial capacity of farmers are generally limited, it is necessary to study the economic feasibility of drip irrigation application as the options to be taken in order developing drip irrigation in the future. This study used quantitative approach by calculating the economic value of chillies crops by using drip irrigation method compared to furrow irrigation method (existing). Data collection was conducted through in-depth interviews to farmers, Irrigation Institute Researchers, related officials at The Ministry of Public Works, Local Agriculture Office, Village Chief, and supported by field observations and literature studies. Besides to save water, drip irrigation trials in Temiyang and Pejarakan Village could save labor costs on watering and treatment plants, cost of fertilizer, and cost of fuel. However the efficiencies are not comparable to the drip irrigation high investment cost, if they have to be borne by the farmers. So it will be feasible if drip irrigation investments subsidized by The Government. Keywords: drip irrigation, furrow irrigation, cost - benefit, groundwater irrigation, drought

PARTISIPASI MASYARAKAT PADA OPERASI DAN PEMELIHARAAN DAERAH IRIGASI Pranu Arisanto1, Suripin 2, Suseno Darsono2

ABSTRAK Ketergantungan petani padi pada sistem irigasi teknis terhadap kondisi infrastruktur jaringan irigasi sangat tinggi. Kerusakan dan tingkat pelayanan yang buruk pada jaringan irigasi sangat berpengaruh pada hasil panen. Masalah manajemen, pendanaan dan sumber daya manusia menjadi faktor yang cukup siknifikan dalam pelaksanaan operasi dan pemeliharaan jaringan irigasi. Kerjasama antara pengelola sistem irigasi terkait dengan partisipasi masyarakat dapat menjadi jalan keluar pemecahan masalah, sedangkan dalam aspek manajemen perlu adanya penilaian yang akuntabel sebagai bentuk pencapaian dan peningkatan mutu layanan. Untuk menyelesaikan permasalahan tersebut perlu dilakukan analisis terhadap bentuk dan besar partisipasi masyarakat pada pelaksanaan operasi dan pemeliharaan. Hasil analisis partisipasi secara simultan terhadap operasi dan pemeliharaan kemudian menjadi salah satu bagian dari analisis Balanced Scorecard sebagai bentuk penilaian kinerja pada perpektif pelanggan. Analisis Balanced Scorecard digunakan untuk penilaian pengelolaan Daerah Irigasi secara menyeluruh. Maksud penelitian ini adalah untuk menganalisis dan mendapatkan bentuk partisipasi dari bentuk kerjasama partisipasi masyarakat, pemerintah dan pemerintah daerah dan menilai tingkat kinerja pengelolaan Darah Irigasi dalam pelaksanan operasi dan pemeliharaan yang berbasis partisipasi. Tujuan penelitian adalah menganalisis potensi bentuk partisipasi masyarakat dalam pelaksanaan operasi dan pemeliharaan serta menganalisis tingkat kinerja pengelolaan D.I Comal Hasil penelitian dengan analisis statistik model analisis jalur menunjukkan bahwa bentuk partisipasi masyarakat pada aspek ekonomi, sosial dan kelembagaan memiliki nilai korelasi berturut-turut 0,451, 0,416, dan 0,421 terhadap operasi dan pemeliharaan, hal ini menunjukkan bahwa ekonomi memiliki pengaruh paling tinggi. Keseluruhan aspek (partisipasi masyarakat) memiliki nilai korelasi secara simultan terhadap operasi dan pemeliharaan sebesar 0,603 (nilai korelasi kuat), nilai korelasi ini merupakan nilai tingkat partisipasi (perpektif pelanggan) pada analisis Balanced Scorecard. Analisis Balanced Scorecard pada pengelolaan DI Comal secara keseluruhan meliputi empat perpektif yang meliputi; (1) perpektis pelanggan,(2) Perpektis Keuangan, (3) Perpektif Proses bisnis internal (4) Perspektif Pembelajaran dan pertumbuhan, secara menyeluruh dikategorikan baik. Beberapa indikator dalam perpektif pelanggan dan keuangan mendapatkan penilaian cukup dan kurang, sehingga perlu perbaikan bentuk manajemen untuk rencana pengelolaan mendatang. Kata kunci : operasi dan pemeliharaan, Irigasi, Partisipasi, analisis jalur, Balanced scorecard

1 2

Mahasiswa Megister Teknik Sipil Universitas Diponegoro Semarang Dosen Megister Teknik Sipil Universitas Diponegoro Semarang

GERAKAN IRIGASI BERSIH SEBAGAI GERAKAN KHAS PARTISIPATIF PENGELOLAAN IRIGASI Dede Sulaeman1, Sigit Supadmo Arif2, Bayudono3 dan Erwin T.N. Sigit4 1

Mahasiswa Program Doktor Ilmu Lingkungan, Sekolah Pascasarjana, Universitas Gadjah Mada, Jl. Teknika Utara, Pogung, Sleman, Yogyakarta, ddsulaeman@gmail.com 2 Guru Besar Teknik dan Manajemen Irigasi, Fakultas Teknologi Pertanian, Universitas Gadjah Mada, Jl. Sosio Yustisia, Bulaksumur, Yogyakarta, sigit@idola.net.id 3 Badan Riset Daerah, Kepatihan Danurejan, Yogyakarta, bayudono02@yahoo.com 4 INACID Yogyakarta, erwintns@yahoo.co.id

ABSTRACT Good implementation on irrigation operation and maintenance will ensure the water availability for farmers. Distric Water Authority (Dinas Sumber Daya Air) and Water User Association (WUAs) should be responsible for an irrigation operation and maintenance. The purpose of this studies was to identify the new model farmer participation named Clean Irrigation Movement (Gerakan Irigasi Bersih/CIM). The study was conducted in Bantul District, Yogyakarta. This study will examine the factors that underline the formation of a new movement, concept, and activities that have been carried out. CIM is a expression of â&#x20AC;&#x153;Jogja Cultureâ&#x20AC;? which is the farmers against the condition of irrigation management in Bantul. The descriptive analysis shows that important variable such as performance of the Distric Water Authority (Dinas Sumber Daya Air), coordination, regulation, pollution, and budget allocation for irigation operation and maintenance are main factors that influencing farmer undertaken the movement. The concept of CIM is increasing for awareness, campaign, empowerment of farmers, and developing a cultural clean environment. For implementation of the concepts, CIM has a several activities such us sosialization and empowering, waste management, implementation monitoring and cleaning irigation systems, motivation and sustainability, and budget sharing. By contrast, farmers and Water User Association (WUAs) do not have good understanding of the concept, less organizational skills, not enough funding, and less motivation to initiate and implemented the concepts. This kind of condition made the activities which already been done only in the stage of physical activity, sporadic, not organized and only in small region. However, as a new cultural movement, CIM should be developed by increasing knowledge, generating for indigenous cultural values in irrigation water management, and developing participatory budgeting. Keywords: farmer, participation, irrigation, clean irrigation movement

APLIKASI SYSTEM OF RICE INTENSIFICATION (SRI) DENGAN TEKNIK IRIGASI BERSELANG (NGENYATIN) DALAM PENINGKATAN PRODUKTIVITAS PADI PADA SISTEM IRIGASI SUBAK Sumiyati1, Wayan Windia2, I Wayan Tika1 dan Ni Nyoman Sulastri1 1

Agricultural Engineering Departement, Faculty of Agricultural Technology, Udayana University, e-mail: sumiyatiftpunud@gmail.com, wayantikaftp@gmail.com, ansulastri@gmail.com 2

Agribusiness Departement, Faculty of Agricultural, Udayana University, e-mail: wayanwindia@ymail.com

ABSTRACT The demand of globalization and international consumers are headed to ecological paddy cultivation techniques, water-saving and environmentally friendly. A common technique in subak system, which is a subakâ&#x20AC;&#x2122;s local wisdom, to manage irrigation water in subak system for rice cultivation is intermittent irrigation (ngenyatin). In addition, subak as a world cultural heritage should be empowered to maintain its sustainability. Therefore, it is essential to heed indigenous knowledge in order to boost rice productivity. Therefore, it is essential to combine SRI method with subak system local knowledge in rice cultivation, i.e. Ngenyatin. The purpose of this study was to determine the effect of Ngenyatin technique and SRI method on rice productivity in subak system. This study was conducted on rice paddy field in Subak Sigaran, Tabanan Regency, Bali Province. Productivity parameters indicated the accretion of total tillers, the length of panicle, total grains per panicle, and productivity in SRI method as well as the combination method of SRI and Ngenyatin. Key words: Rice, SRI, Productivity, Intermittent Irrigation (Ngenyatin)

PENGARUH VARIASI KONSENTRASI INFLUEN DAN HYDRAULIC LOADING RATE (HLR) TERHADAP PENYISIHAN PARAMETER BOD DAN COD PADA PENGOLAHAN AIR LIMBAH DOMESTIK ARTIFICIAL (GREY WATER) MENGGUNAKAN REAKTOR UASB Iin Novitasari*; Syafrudin*; Sudarno*); Purwanto ** * Teknik Lingkungan, FT Undip; ** Program Doktor Ilmu Lingkungan Undip

ABSTRACT One of the most notable development in anaerobic treatment process technology was Upflow Anaerobic Sludge Blanket (UASB) reactor in the late 1970s. One of the advantages of UASB reactor is suitable for the tropics because it has a high temperature. Domestic wastewater is divided into two types, namely black water and grey water, but in this case used of artificial domestic grey water. Grey water is household wastewater from showers, sinks and kitchen. The research was conducted in laboratory scale. This study performed a variation of Hydraulic Loading Rate (HLR) and the influent concentration. There are 25 reactors include 5 variations of influent concentration and 5 Hydraulic Loading Rateâ&#x20AC;&#x2122;s (HLR) variation. The research can be assessment BOD5 and COD removal with treatment in UASB. Efficiency of BOD5 removal by varying the influent concentration and HLR was about 38%-75% and COD was about 40%-77%. The lower concentration can be increase efficiency BOD5 and COD removal. Influent concentration optimum occur when middle concentration was about 840 mg/L COD and HLR optimum was 0,05 m3/m2/hour. Key Words: UASB, influent concentration, Hydraulic Loading Rate (HLR)

PENGARUH HYDRAULIC LOADING RATE (HLR) DAN KONSENTRASI TERHADAP PENYISIHAN PARAMETER BOD, COD DAN NITRAT PADA PENGOLAHAN AIR LIMBAH DOMESTIK CAMPURAN (GREY WATER DAN BLACK WATER) MENGGUNAKAN REAKTOR UASB Syafrudin, Sudarno, Ardina Sita Ningrum, Program Studi Teknik Lingkungan Fakultas Teknik Universitas Diponegoro

ABSTRACT In this study using a mixture of domestic wastewater. Parameters to be researched is the Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD) and nitrate-nitrogen (NO3-N). Alternative anaerobic treatment is to use UASB (upflow Anaerobic Sludge Blanket) . This study performed a variation of Hydraulic Loading Rate (HLR) and the influent concentration to obtain the optimum conditions on an UASB reactor laboratory scale for removal BOD5, COD and NO3-N in a mixture of domestic waste water (grey water and black water). Pollutant removal efficiency by varying the influent concentration and HLR for BOD5 was about 57% -76%, for COD was about 59% -69% and NO3-N was about 75% -98%. The results is the lower influent concentration will decrease removal efficiency that occurred on the parameters of BOD5, COD and NO3-N. The maximum removal efficiency on the parameters BOD5 and COD occurs when HLR low at 0.025 m3/m2/hour or 6.94 x 106 m/s. While the maximum removal efficiency of NO3-N occurred when HLR high 0.05 m3/m2/hour or 1.4 x10-5 m/s. Removal for BOD5 optimum occurs at low concentrations are 419 mg/l with a variation HLR of 0.05 m3/m2/hour or 1.4 x10-5 m/s, for COD occurred at low concentrations are 878 mg/l with a variation HLR of 0.025 m3/m2/hour or 6.9 x10-6 m/s, and NO3-N concentration was occur in the 36 mg/l with a variation HLR of 0.033 m3/m2/hour or 9.2 x10-6 m/s. The results of treatment using UASB still above the standards that should UASB be used as a secondary treatment to obtain the effluent below quality standart. Keywords: mixture domestic wastewater, UASB, concentration, Hydraulic Loading Rate (HLR)

OPERATION OF CITARUM RESERVOIR IN ADAPTING TO CLIMATE CHANGE Mohammad Amron 1, Herman Idrus2, Reni Mayasari 3 1

2 3

President Supervisor Board of Jasa Tirta II Public Corporation | mochammad.amron@gmail.com President Director of Jasa Tirta II Public Corporation | hermanidrus@gmail.com Head of Bureau Data Management and Water Allocation of Jasa Tirta II Public Corporation renimayasar29@yahoo.com

ABSTRACT Citarum River, the biggest river in West Java Province, characterizes by three large dams formed a cascade system to serve multiple users and is considered as the most strategic river basin in Indonesia. Citarum cascade hydropower consists of Saguling dam at the uppermost, Cirata dam in the middle and Jatiluhur dam at the lowest part of the system. Jatiluhur dam which has the biggest reservoir acts as buffer for the upper two reservoirs with exceptional purpose to supply the Jatiluhur irrigation system, the largest contiguous irrigation system in Indonesia, domestic, municipal and industry raw water supply beside generating hydro-electricity as the main purpose of the upper two reservoirs. The rising environmental awareness transformed into global pressure on using environmentally sound energy to replace or reduce application of the green-house-gases (GHG)-emitted type of energy. Hydropower as little or no greenhouse emission source of energy has role in supporting the global policy on climate change. In reverse, as hydropower depends on water availability (temporal and spatial), to optimally use water for generating electricity hydropower requires good water resources conditions which refers to reservoir operation for multiple uses that imply to climate change status in the basin. Jatiluhur hydropower has been in operation since 1967, followed by Saguling in 1986 and Cirata in 1988. In the latest period of operation, the hydrologic flow regime is changing. This is shown by higher deviation between maximum and minimum daily discharge during the pre-war period (1923-1943) and the post-war period (1963-1984). This may infer to hydrologic effects of land use changes. However, this is not only the reason of investigations to modify Citarum hydropower operation. Shifting of seasons, longer dry seasons and shorter but more intense wet seasons that have been valued as the impacts of climate change are likely future rainfall pattern in Java. To optimally use water for generating electricity and other purposes, Citarum hydropower operation should be adapted to cope with probable future flow regime that caused by either the impacts of climate change or watershed conditions. This should also be elaborated by demands management and improving watershed condition on the other side. Keywords: Climate change, Citarum reservoir operation.