JAKKUR LAKE Kere As Pattern
“JAKKUR LAKE” Kere As Pattern
This book is a documentation for Charrette, Summative Assessment conducted in 2015-16 at Srishti Institute of Art, Design and Technology.
ByRachita Agarwal PDP201
Contents
• About Jakkur lake • Kere As Pattern • Analysis & Mind Map • Design Breifs- Patterns • Ideation and Sketches • Final Output
About Jakkur Lake
The Jakkur Lake is in the north-eastern part of the city and is one of the largest and cleanest water bodies in Bangalore. It is the main lake in the chain of lakes comprising of the Yelahanka Lake upstream and the Rachenahalli Lake downstream. It is about 140 acres large and has recently been rejuvenated by the Bangalore Development Authority . Besides being a freshwater lake that provides water to the city it’s a paradise for several birds. It is a potential model for Integrated Urban Water Management. This unique socio-ecological ecosystem highlights
the symbiotic relationship between nature and humankind. By serendipity, a sewage treatment plant with a capacity to treat 10 million litres a day was set up north of the lake by the Bangalore Water Supply and Sewerage Board. This treatment plant receives waste water from about 12,500 households from areas around Jakkur like Yelahanka. The plant is currently able to let out 8 million litres of treated water into the man-made wetland that further purifies the water by a natural process before letting it enter the lake.
Kere As Pattern
Exploring patterns of Kere at different levels as forms and metaphors. By studying fluidityy, turgidity, rhythm, light, shadow, current and colour of kere’s ecosystem, rich pattern emrge. Anything can be mapped as pattern. Studying, identifying and generating patterns surrounding the ecosystem or man-made system of the kere through visuals. Identifying 3 different patterns within the context of kere and illustrating these visually to create 3 different outputs.
Analysis and Mapping In spite of a capacity of 10 MLD, the plant treats only about 6 MLD on average, when it is functioning. Sewage from neighbouring Yelahanka is brought here, while sewage from Jakkur itself is not treated here. A lot of the buildings in Jakkur are high rises, with their own Sewage Treatment Plants. It is doubtful whether they are even aware of the BWSSB Sewage Treatment Plant upstream of the lake. If citizens and the utility communicated with each other, Jakkur could become a closed loop of integrated urban water management in the very heart of Bangalore city. Jakkur Lake sits nestled behind the bustling Hebbal Highway that leads to Devanahalli International Airport. A pristine, quiet spot of nature in the midst of Bangalore, this lake stands testimony to the potential that exists to manage urban water sustainably, and in an integrated manner. Jakkur Lake was fenced and developed by the Bangalore Development Authority (BDA) a few years ago. The Bangalore Water Supply and Sewerage Board (BWSSB) then set up a Wastewater Treatment Plant upstream of Jakkur Lake, with the capacity to treat 10 million litres per day (MLD) of wastewater. The operation and maintenance of the plant is managed by a private company, on contract with the BWSSB.
Currently, the way the system works is that raw sewage is pumped in to the plant, and the solid waste is separated from the liquid waste. The liquid waste is then treated at the anaerobic wastewater treatment plant. Standing on top of the plant, its sheer size is a sight to behold. To the right of the plant is a constructed man-made wetland, into which the treated wastewater is diverted. This wetland further purifies the treated wastewater through natural processes, before letting the water flow into the main Jakkur Lake. The lake itself has become a hotspot for biodiversity, attracting birds and hosting a variety of plants. During peak
fishing season, fishermen haul in up to 500 kgs. of fish daily – an astounding achievement for a lake in the middle of a bustling metropolis like Bangalore. The fact that people are making a living off an urban lake is truly an achievement, and a step towards reestablishing our connection to water. There is still some way to go for Jakkur Lake to become a sustainable model for urban water management. There are several private borewells on the boundary of the lake, all extracting groundwater in an unregulated fashion. One borewell is known to extract groundwater and sell it as tanker water to parts of the city
that do not get municipal water supply. Buildings around the lake are getting their water supply from borewells on the boundaries of the lake, which depletes the groundwater.
Pelicans island
STP
Learning Centre
Algae
wetland Conservative Dead zone
fishes
Ideations & Patterns
Pattern - 1
Design Breif STP releases various harmful chemicals containing nitrogen and phosphorous, which gets further filtered by Wetland. Wetland contains hyacinth and algae, which are controlled by fishermen in a manner that it supports further filtration. However, there is a possibility for chemicals to enter the lake, causing increasing number of dead fishes.
Dead fishes are an alarming indicator for the imbalance in the ecosystem of Jakkur Lake. Various actions by humans for example disposal of bio waste in the lake, fishing, etc leads to the cause. The idea is to showcase this concept where humans and fishes play an important role and “create a pattern�.
Ideations & Sketches
Pattern 1 Bookmark: 6”x2”
Pattern - 2
Design Breif Jakkur Lake tries to protect both engineering as well as the social cultural & community ownership of lake as a model of maintaining it and managing it. This involves intricate relationship between nature and man-made ecosystem.
The idea is about communicating Jakkur Lake as a model of sustainable development “showcasing the entire give and take pattern� it undergoes.
Ideations & Sketches
Pattern - 3
Design Breif There is a constant interaction of Jakkur lake with its users for various activities like- walking exercising, picnic, bird watching etc. Humans are also known to take their surroundings as physical, profitable and ill consumed object of rectification. Realisation about lake’s prominence is equally important to persuing it in its current form.
“Identifying pattern in human interaction� with kere. Providing a visual design solution to communicate with the users through various informative and safety signboards.
Biblography & Research
Information from - Dr. Vishwanath www.thealternative.in bangalore.citizenmatters.in www.deccanherald.com www.newindianexpress.com