A Situational Analysis of Lakes in BangaloreNovember 9, 2015

Tejas Kulkarni

Hesaraghatta (1921)0MLD – 30MLD30 Kms away

Arkavathy River

TG Halli (1931)15MLD – 135MLD40 Kms

Cauvery River (1971) – 1,350MLDLifted 300mtrs - 100 kms away

Background

Bangalore’s water is costliest in the India and Asia, costing the government Rs.82/Kilolitre on actual whereas Delhi's only Rs.28/Kl.

Total Water Consumption of City

1440 MLD (approx)

Background

Peripheral areas of Bangalore city is highly dependant on GW and tankers owing to the shortage in Water supply and sewerage lines.

Koramangala Chalagathha Valley

Yellamallappa Chetty Valley

Vrishbhavathi Valley

Sout

h Pin

nakin

i Rive

r

Vrishbhavathi River

Total No Lakes in BBMP Jurisdiction - 183 BBMP Custody - 59 BDA Custody - 115 LDA Custody - 05 KFD Custody - 09

Background

59 Lakes Development details in BBMP CustodyAlready Developed – 21Development in Progress – 28Lakes to be Developed – 10

Introduction

•Study to Determine the existing status of 100 lakes in Bangalore was assigned to Kiran Consultants.

•Critical Information which will indicate the health of lakes

•Provide key inputs on their restoration progress.

Approach

1.Literature Review : Lakshman Rau Commitee report, Environmental Support Group (ESG), Centre for Lake Conservation(CLC), Environmental

Management & Policy Research Institute(EMPRI), Namma Bengaluru Foundation.

2.Preparatory Work : Selection of lakes evenly distributed over the city

3.Secondary Data Collection : Filed RTI on lake status and details on encroachment

4.Site Visits (Primary Data) : Our team of Environmental Engineers, hydro-geologists inspect each lake individually to inspect the given parameters of the lake.

Methodology

•Lake Boundary: Fenced - Partially Fenced – Demarcated - No Demarcation •Sewage: STP installed – Diverted - Let in •Catchment Bund: Exists - Not Exist •De-silting: Done - Under Progress - Not Done•Bund formation and revetment: Done - Under Progress - Not Done•Biodiversity Flora: Plantation Done - Under Progress - Not Done•Biodiversity Fauna: Fishing – Done - Not Done Bird Life – Exist - Does Not Exist •Kalyani: Constructed: Under Progress - Not Done•Water Quality: Within permissible level – Above permissible level Involvement of local community: Active – Partial - No involvement

Metadata on lakes

1. Name of Lake/ Local Name2. Area of lake3. Encroached areas 4. BBMP Ward/Zone5. Governing Body6. Circumference (Perimeter)

Parameters

26 lakes

21 lakes

40 lakes

13 lakes

Sample distribution across Bangalore city.

Inferences

•58 lakes have an area more than 20 acres ; 28 lakes between 10-20 acres.

•64 lakes in the sample are already fenced ; 13 lakes partially fenced ; 22 not fenced.

•43 lakes have diverted sewage ; 10 lakes have STPs installed ; 47 lakes sewage is still let in.

•63 lakes have a catchment bund.

•59 lakes have desilted beds ; 36 lakes not done ; 5 lakes under progress. Similar numbers w.r.t. bund formation and revetment.

• 46 lakes have flora plantation ; 8 lakes under progress ; 46 lakes not done.

•56 lakes have active faunal biodiversity and birdlife.

•Fishing is carried out in 29 lakes in the sample.

•16 lakes have a Kalyani ; 3 under progress..

Discussion

• Involvement of community is active (Trust), Partial (FB page/Blog), Inactive if no secondary citizen information was available. • Bangalore North have developed lakes which are already developed but seem to have lower involvement of the community when compared to Bangalore East and Bangalore South.• 6 lakes under the Electronic City Industrial Authority are yet to be developed.

BBMP Zone

Authority

Total Lakes

Local Community Involvement

BBMP BDA LDA Other Active Partial No involvement

Bommanahalli 16 2 2 1 21 10 6 5

Byatrayanpura 16 3 2 1 22 12 1 9

Dasarahalli 0 2 0 0 2 0 0 2

East core zone 6 0 0 0 7 4 0 2

Mahadevapura 12 3 2 3 20 11 5 4

Rajajeshwari 4 2 2 0 8 1 1 6

South core zone 11 3 0 0 14 3 5 6

West core zone 3 0 0 0 2 2 0 1

ELCIA 0 0 0 4 4 0 4 0

Zone-wise distribution and Involvement of Local Community

References

•“Performance audit on Conservation and Ecological restoration of Lakes under the jurisdiction of Lake Development Authority and Urban Local Bodies”, Report No.1, 2015.•“Strategic Action Planning for revival of Bangalore lakes”, Multi-stakeholder Workshop, 2014•“Survey on lake Encroachments” by Namma Bengaluru Foundation, 2014.•“Assessment derived conservation strategies of Bangalore Water Bodies” by Center for Lake Conservation(CLC), from Environmental Management & Policy Research Institute(EMPRI)”, 2013.• “Preservation of Lakes in the city of Bangalore”, Report by the committee constituted by the Hon’ble High Court of Karnataka to examine the ground realities and prepare an Action plan for preservation of lakes in the city of Bangalore, 2011.•“Submission of wise use practices for protection, management and rehabilitation of lakes in Karnataka with special emphasis on Bangalore and other urban areas”, Environmental Support Group (ESG), 2011.

Thank You !