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PRESENTATION ON LAKE RESTORATION PROJECTS BEING

TAKEN UP BY B.D.A.

BANGALORE DEVELOPMENT AUTHORITY

Bangalore Development Authority

Aims & Objectives: 1. Regulation and Planning of Bangalore Metropolitan Area.2. BDA has a jurisdictional area of 1046 sq kms. 3. Formation of Residential Layouts and Allotment of Sites at

subsidized rates to the needy people.4. Taking up the required Infrastructure Facilities in Bangalore city

such as Construction of Flyovers, Road Infrastructure, Construction of Complexes etc..

5. Construction of Affordable Housing Projects and Allotment of Houses to the needy people.

6. Environmental Conservation Initiatives Such as Lake Restoration projects, Enhancing Green Cover, Development of Parks etc.

Present Scenario of Lakes in Bangalore• Bangalore City alone has got a total no of

around 280 to 300 lakes.• Lakes has lost its identity due to Rapid

urbanization.• Majority of the lakes are filled with sewage.• Majority of the lakes have undergone

encroachment of the lake areas, cropping up of unauthorized structures in the lake areas, dumping of garbage etc.

• Absence of proper monitoring and maintenance system for lakes.

• Absence of a proper funding mechanism for lakes.

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IMPORTANCE OF LAKE RESTORATION PROJECTS

Based on Government directions, as an environmental

protection initiative BDA has taken up the conservation and

preservation of Natural water Bodies to their original glory in

and around Bangalore .City.

For Prevention of Pollution

To prevent encroachment

To develop the lake as a fresh water storage pond

For Flood Mitigation

To Preserve the Lake to its original Glory

To develop the lake as a recreational centre.

To preserve and recharge the depleting underground water

table.

Methodology followed by BDA for Project Preparation

Projects Prepared as Per National Lake Conservation programme (NLCP), MoEF, New Delhi Guidelines and with a Master plan concept.

Sewage Diversion & Treatment Proposals prepared as per CPHEEO, MoUD, New Delhi Guidelines.

Remodelling of Inlet/Outlet Channels inline with BBMP SWD Master Plan proposals.

Lake boundary identification and Encroachment removal.

Works Categorized into Core & Non Core Components.

Works proposed to be taken up in two stages.

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Removal of encroachment. & boundary fixing

Chain link fencing all along the periphery of the lake to check unauthorized

encroachment and dumping of debris & construction waste.

Deweeding.

Desilting.

Formation of peripheral Bunds all along the periphery of the lake

Construction of Wet lands to remove nutrients from non point source.

Construction of Sewage Water Diversion channel / pipelines.

Construction of Silt traps to check the entry of silt.

Construction of Screen barriers to check the entry of floating objects.

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Methodology followed by BDA for Lake Restoration Projects

Construction of RCC Storm Water inlets

Improvements to the Waste Weir.

Creation of islands for the re-habitation of birds.

Landscaping and development of parks and childrens play area.

Afforestation.

Lighting all along the periphery of lakes.

Construction of localized tertiary sewage treatment plants where ever

necessary to maintain the water level in the lake for 365 days

Supply of excess treated water to down stream lake series through

separate pipeline

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Methodology followed by BDA for Lake Restoration Projects

Phase IIIPhase IIPhase I

LegendPrimary SWD

Secondary SWD

WaterBodies

BDA Boundary

• Phase I – 13 Lakes• Phase II – 32 Lakes• Phase III – 78

Lakes

Location of Lakes

STATUS OF LAKE RESTORATION WORKS TAKEN UP BY B.D.A.Sl No Phase Category

of workTotal No. of Works

Total No. of Works complete

d

Total No. of works

under progress

Total No of works for which Revenue certificati

on / eviction orders

pending

Lake Area

(A - G)

Encroachment

Identified(A - G)

Encroachment

Cleared(A - G)

1PHASE-1 Comprehensive development of Lakes

13 12 1 -- 766 - 33 31 - 16 14 - 27

2PHASE-2 Fencing works

32 15 17 16 2373-37 57 - 36 04 - 24

Comprehensive development of Lakes

- - - - - - -

3PHASE-3 Fencing works

78 25 6 48 1917-17 187 - 00 44 - 00

Total 123 52 24 64 5057 - 37 276 - 12 63 - 11

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Sl.No Phase Total No. of Works

Estimated Cost

In Crs

ExpenditureIn Crs

Total No. of Works

completed

Total No. of works under

progress

Tenders under

process

Revenue certification

pendingNos

1

Phase-1Comprehensive development of Lakes 13 90.21 87.51 12 1 - -

2

Phase-2Fencing works

Comprehensive development of Lakes

32 19.50 3.70 15 17 - 16

- 541.50 - - - - -

3Phase-3 Fencing works 78 225 - 25 06 47 48

Total 123 876.21 91.21 52 24 47 64

STATUS OF LAKE RESTORATION WORKS

Details of Revenue Certification, Rehabilitation, Sewage and Lake Feeding ABSTRACT

Sl No Phase Category of work

Total No. of Works

Total No. of Works complete

d

Total No. of works

under progress

Total No of lakes

for which Revenue certificati

on / eviction orders

pending

Total No of Lakes for which rehabilitat

ion is required

Total No of Lakes which are polluted

by sewage

Total No. of Lakes which

require feeding of

treated water

1

PHASE-1 Comprehensive development of Lakes

13 12 1 03 05 (211)

- 03

2

PHASE-2 Fencing works

32 15 17 16 17

(1031)

26 22

Comprehensive development of Lakes

- - (07) - - - -

3PHASE-3 Fencing

works 78 25 6 48 35

(1069)

55 37

Total 123 52 24 68 57 (2311)

81 62

B. NARAYANAPURA LAKE:- SEWAGE ENTRY

B. NARAYANAPURA LAKE: ENCROACHMENT IN TANK AREA

KALKERE- RAMPURA LAKE:- GARBAGE DUMPING SEWAGE ENTRY

VIBUTHIPURA LAKE:- ENCROACHMENT & SEWAGE

ENTRY

Chain link fencing to Lingadeeranahalli Lake (32 Lakes)

Chain link fencing to Chikkabettahalli Lake (32 Lakes)

Chain link fencing of GandhinagaraHosakere

Chain link fencing of Gandhinagara Hosakere

Barbed wire Fencing to Sooli Kere

Completed Projects – Mallathahalli LAKE (13 Lakes)

16Newly Commissioned 5.0 MLD STP near Malathahalli Lake

Sewage entry through SWD before commissioning of STP

Sewage diverted to STP. No sewage entry into lake

Lake view after restoration

Lake filled with tertiary treated water after restoration

Completed Projects – Mallathahalli LAKE

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Mallathahalli LAKE

18

Ullala Lake

During

After

Before

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Kommaghatta Lake

During

After

Before

After Restoration

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Sompura Lake

During

After

Before

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Issues of Lake restoration works The following are the issues which had slowed down the progress of lake restoration works.

• All the lakes are transferred from BBMP / Forest Department to BDA for further development / maintenance, wherein the majority of the lakes are encroached, polluted with sewage and garbage dumping.

• Any lake restoration project has to be started with revenue survey of the lake area, identification of encroachment, demarcation of encroachment and finally eviction of encroachment which has to be done by the revenue department, since the proprietary of all the lakes vests with the revenue department.

• The clearance of encroachment on the lake areas is one of the serious issues which has slowed down the progress of lake works. In 64 cases the certification of encroachment, issue of eviction orders are pending which has to be taken up on priority.

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Issues of Lake restoration works • 81 Lakes under BDA control are affected by huge sewage flows, which has to be connected from the source to the main trunk sewer lines through a conduit which has to be taken up by BWSSB on priority.

• Since the majority of the lakes in the core areas of the city are encroached, which has

huge no of habitants, wherein rehabilitation of such encroachers has to be taken up on priority. As a rough estimate 57 lakes contains 2311 No’s of un-authorized habitants which needs to be rehabilitated. This issue is to be taken up on top priority by the Urban Deputy Commissioner and The Commissioner Slum Board.

• In majority of the lakes, the Rajakaluves connecting lake to lake to transport the surplus water are non existant which has led to flooding, loss of property etc. So these Rajakaluves has to be demarcated on ground, encroachments to be removed and an earthen section of the Rajakaluve has to be provided for a free flow .

• Lack of adequate financial resources .

• Lack of proper maintenance mechanism.

• Lack of adequate man power .

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Suggestions / Recommendations There should be a more rigorous approach from the revenue authorities in tackling encroachments and related issues. Strict penal actions from the enforcing authorities in tackling encroachments, dumping of garbage, Entry of sewage into the lakes. There should be an integrated sewage network system for the entire Bangalore Metropolitan area, to be addressed by BWSSB on top priority. The Rehabilitation of the un-authorized habitants on the lake areas has to be taken up on priority by the Slum Development Board and the Revenue Authorities. The existing lake development authority should be made as a single nodal agency who can execute, enforce, monitor, maintain all urban lakes. The existing Lake Development Authority should be strengthened with adequate man power. A proper funding mechanism should be developed to provide adequate funds for execution and maintenance of lake systems.

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