05/08/65 1 On 5 Aug 2022
ReserveSamnakbokPond Khlong Yai res. Nong Pla Lai res. Dok Krai res. Private Pond Prasae res. Existing Pipe Network Constructing Pipe Network Raw Water Pipe Line (EW) Existing Pipe Network Constructing Pipe Network Raw Water Pipe Line (RID) Bang Phra res. Nong Kho res. P1 P3P4 P8 P9 P12 P11 P13 P14 P5 P7 P 34.84P2P6 P10 15.53 71.61 195.81 221.0037.62 Demand 2564 (MCM.) Supply (MCM.) Pump StationXXXXXX Ref: Royal Irrigation55.97Department 136.05 84.79 20.60 P15 Overview of water situation in Rayong-Chonburi area on 5 Aug 2022 1 Chonburi Rayong BangPhra NongKho Dokkrai NongLaiPla KlongYai Prasae Reservoir capacity (MCM) 117.00 21.40 71.40 163.75 40.10 295.00 Current storage volume (MCM) 84.79 20.60 55.97 136.05 37.62 221.00 Percentage of reservoir capacity 72% 96% 78% 83% 94% 75% Useable storage volume (excluding Dead Storage) (MCM) 72.74 19.60 52.97 122.55 34.62 201.00 Inflow into reservoir (MCM) (On 4 Aug 2022) 0.301 1.070 0.4651.836 Water volume compared to previous week (-decrease, +increase) (MCM) +6.28 +1.95 +0.75 +9.60 +5.02 +13.76 +8.23 +15.37 Total water volume in each area 105.39 MCM (76.10%) 229.64(83.43%)MCM Ref: water situation from RID on 18 Mar 2022
05/08/65 3 Water situation of Bangphra, Nongkho Reservoir Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 มิ ส Maximum 2006-2021 2004 2005 2015 2016 2017 2018 2019 2020 2021 Capacity Dead storage URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Bangphra and Nongkho Reservoirs (MCM.)ReservoirsNongkhoandBangphrainvolumeWater 0 20 40 60 80 100 120 140 160 5 Aug 2022 105.385 MCM. 76.15 % 2 Reservoirs total capacity 138.4 MCM. Minimum reservoir volume 13.05 MCM. URC - RID LRC - RID Average 2006 -2021Maximum 2006 -2021 202 2 2016201520052004 2017201820192020 202 1
05/08/65 4 Water situation of Bangphra Reservoir (by Year) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 ม พ ค เม พ ค ค ก พ 2004 2005 2006 2011 2015 2016 2018 2019 2020 2021 Capacity Dead storage URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Bangphra Reservoir (MCM.)ReservoirBangphrainvolumeWater 0 20 40 60 80 100 120 140 5 Aug 2022 84.785 MCM. 72.47 % Reservoir Capacity 117 MCM. Minimum reservoir volume 12.05 MCM. URC - RID LRC - RID Average 2006 -2021 2021 2015 2016200420062005 201920202018 2011 202 2
05/08/65 5 Water situation of Nongkho Reservoir (by Year) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 2 4 6 8 10 12 14 16 18 20 22 24 26 ม ก เม พ ค ค ย ธ 2004 2005 2011 2015 2016 2018 2019 2020 2021 Capacity Dead storage Normal useable volume URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Nongkho Reservoir (MCM.)ReservoirNongkhoinvolumeWater 0 5 10 15 20 25 5 Aug 2022 20.6 MCM. 96.26 % Reservoir Capacity 21.4 MCM. Minimum reservoir volume 1 MCM. URC - RID LRC - RID Average 2006 -2021 202 2 20152016 20042005 201820192020 Normal useable volume 2 MCM. 2011 2021
Water situation of Nongplalai, Dokkrai and Klongyai Reservoirs Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 ม ค ก พ เม พ ค ค ย ค ธ Maximum 2006-2021 2004 2005 2014 2015 2016 2017 2018 2019 2020 2021 Capacity Minimum volume Dead storage Increased Capacity URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Dokkrai Nongplalai and Klongyai Reservoirs (MCM.)ReservoirsKlongyaiandNongplalaiDokkraiinvolumeWater 0 50 100 150 200 250 300 350 31 31 30 30 29 29 28 27 27 26 26 5 Aug 2022 229.635 MCM. 83.43 % 3 reservoirs total capacity 275.25 MCM. Minimum reservoir volume 26 MCM. URC - RID LRC - RID Average 2006 -2021Maximum 2006 -2021 202 2 2016201520042005 2019202020182017 Dead storage 9.5 MCM. 2014 Increased reservoir capacity (temporary) 318.13 MCM. 202 1
05/08/65 7 Water situation of Dokkrai Reservoir (by Year) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 10 20 30 40 50 60 70 80 90 100 ม พ มี เม ย พ ค ส ค ค พ ธ 2004 2005 2006 2011 2014 2015 2016 2017 2018 2019 2020 2021 Capacity Dead storage Increased Capacity URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Dokkrai Reservoir (MCM.)ReservoirDokkraiinvolumeWater 0 10 20 30 40 50 60 70 80 90 100 5 Aug 2022 55.966 MCM. 78.38 % Increased reservoir capacity (temporary) 79.41 MCM. Minimum reservoir volume 3 MCM. URC - RID LRC- RID Average 2006 -2021 2022 2015201620052004 2018201920202017 Reservoir Capacity 71.4 MCM. 2006 20112014 2021
Water situation of Nongplalai Reservoir (by Year) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 20 40 60 80 100 120 140 160 180 200 220 ม พ ค เม พ ค มิ ค ส ย ต ย ค 2004 2005 2006 2011 2014 2015 2016 2017 2018 2019 2020 2021 Capacity Dead storage Increased Capacity URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Nongplalai Reservoir (MCM.)ReservoirNongplalaiinvolumeWater 0 50 100 150 200 5 Aug 2022 136.045 MCM. 83.08 % Reservoir Capacity 163.75 MCM. Minimum reservoir volume 13.5 MCM. URC - RID LRC - RID Average 2006 -2021 2021 2016201520042005 2020201920182017201420112006 Increased reservoir capacity (temporary) 187.62 MCM. 2022
Water situation of Klongyai Reservoir (by Year) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 5 10 15 20 25 30 35 40 45 50 55 ม ค ก พ มี เม พ ค ค ย ค ธ 2006 2011 2014 2015 2016 2017 2018 2019 2020 2021 Capacity Dead storage Increased Capacity Lowest of tunnel URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Klongyai Reservoir (MCM.)ReservoirKlongyaiinvolumeWater 0 10 20 30 40 50 5 Aug 2022 37.624 MCM. 93.83 % Reservoir Capacity 40 .1 MCM. Minimum reservoir volume 9 .5 MCM. URC - RID LRC - RID Average 2006 -2021 2022 20162015 2019202020182017 Increased reservoir capacity (temporary) 45 .465 MCM. Lowest water level that can be transferred through tunnel to Nongplalai Reservoir 15 .2 MCM. 20112006 2014 2021
Water situation of Prasae Reservoir Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 ม ค ก พ มี เม พ ค ค ย ค ธ Maximum 2006-2021 2005 2006 2015 2016 2017 2019 2020 2021 Capacity Dead storage URC - RID LRC - RID Average 2006-2021 2022 Water Situation of Prasae Reservoir (MCM.)ReservoirPrasaeinvolumeWater 0 50 100 150 200 250 300 350 5 Aug 2022 221 MCM. 74.92 % Reservoir Capacity 295 MCM. Minimum reservoir volume 20 MCM. URC - RID LRC - RID Average 2006 -2021Maximum 2006 -2021 2022 2016201520062005 2020201920172021
Measure Planned Water Volume (MCM) 2022 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Total 1. Primary measures 1.1Water diversion via pumping from Prasae Reservoir Planned PS KY 2.00 2.00 3.00 4.50 4.50 4.50 4.50 25.00 Planned PS NPL 0.14 0.21 0.67 0.48 0.20 0.13 1.00 0.15 0.15 0.15 0.15 0.15 3.58 ActualPS-KY 3.05 2.10 2.60 4.63 1.93 0.33 14.64 PSActual-NPL 0.14 0.21 0.66 0.48 0.17 0.13 0.11 0.02 1.92 1.2 Divert Water from Bangpakong River + Private Pond Planned Private Pond 1.49 1.70 1.94 1.45 0.51 0.21 0.47 - - - - 0.79 8.55 Planned Bangpakong 0.08 5.78 7.74 7.57 2.43 23.60 Actual Private Pond 1.49 1.70 1.94 1.45 0.51 0.21 0.47 7.77 Actual Bangpakong 0.00 0.33 0.33 1.3 Klong Saphan reverse pumping station Planned KlongSaphan 4.00 4.00 2.00 10.00 Actual KlongSaphan 2.22 0.00 2.22 1.4 Divert Water from Klong Pra ChaiyanuchitOng Planned 10.0 14.0 7.0 8.0 10.0 39.00 Actual 1.66 2.24 3.90 Summary of water shortage prevention and mitigation measures in Rayong and Chonburi Provinces 2022 2 Aug 1620JulJul 4 Aug 4 Aug 4 Aug
Target Line and Reservoir Simulation in Chonburi • Divert water from Bang Pa Kong River and Pra Ong Chaiyanuchit (diversion will according to the water situation) • Increase water diversion from Rayong (diversion will according to the waterOnsituation)5Aug 2022 Water Volume 132.94 MCM 155 Normal130 Status All Clear) Prepare water reserve Surveillance of water scarcity Water shortage warning • Divert Water from Khlong Luang Ratchalothorn reservoir (diversion will according to the water situation) • Consideration for another private pond • Reduce water usage for various activities Minimum storage volume15.05 MCM. 155 155 130 Prepare water reserve Normal Status All Clear)
05/08/65 13 Target Line and Reservoir Simulation in Rayong 230 220 170 220 On 5 Aug 2022 Water Volume 229.64 MCM or 83.43% Normal Status All Clear) Surveillance of water scarcity Water shortage warning Minimum storage volume 31.70 MCM. • Divert water from Prasae reservoir via Prasae Yai pipeline and PrasaeNong Pla Lai pipeline (diversion will according to the water situation) • Divert water from Wat La Harn Rai to Nong Pla Lai reservoir (diversion will according to the water situation) • Divert water from Prasae reservoir via Prasae Klong Yai pipeline and Prasae Nong Pla Lai pipeline (Full efficiency) • Divert water from Wat La Harn Rai to Nong Pla Lai reservoir (Full efficiency) • Reduce water consumption for all activities Normal Status All Clear) 170
Target Line and Reservoir Simulation in Prasae • Divert water from Khlong Saphan canal to Prasae reservoir (diversion will according to the water situation) • Divert water from Wang Ta Nod canal to Prasae reservoir (diversion will according to the water situation) • decrease divert water from Prasae reservoir (diversion will according to the water situation) 250 250 Storage Volume 295.0 MCM Normal Status All Clear) Prepare water reserve Surveillance of water scarcity Water shortage warning Minimum storage volume 20.0 MCM. • Reduce water consumption for all activities On 5 Aug 2022 Water Volume 221.00 MCM or 74.90% 250 160 Prepare water reserve Normal Status All Clear) 160
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