Post on 15-Apr-2017
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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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