The document summarizes a presentation by the Bangalore Development Authority (BDA) on lake restoration projects in Bangalore. It provides background on BDA's aims, the current state of Bangalore's lakes which have faced degradation due to urbanization, pollution and encroachment. It outlines the importance of lake restoration for environmental and flood control reasons. The methodology described restoration steps like removing encroachments, desilting, constructing diversion channels and treatment plants. Statistics are given on the status of projects under Phases 1-3, with challenges noted like pending encroachment clearances and need for sewage diversion and habitat rehabilitation. Recommendations call for stronger enforcement against encroachments and pollution, an

1. 1
PRESENTATION ON LAKE
RESTORATION PROJECTS BEING
TAKEN UP BY B.D.A.
BANGALORE DEVELOPMENT AUTHORITY

2. 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.

3. 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.

4. 4
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.

5. 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.
5

6.  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.
6
Methodology followed by BDA for Lake Restoration Projects

7.  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
7
Methodology followed by BDA for Lake Restoration Projects

8. Phase IIIPhase IIPhase I
Legend
Primary SWD
Secondary SWD
WaterBodies
BDA Boundary
• Phase I – 13 Lakes
• Phase II – 32 Lakes
• Phase III – 78 Lakes
Location of Lakes

9. STATUS OF LAKE RESTORATION WORKS TAKEN UP BY B.D.A.
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 works
for which
Revenue
certificati
on /
eviction
orders
pending
Lake
Area
(A - G)
Encroach
ment
Identified
(A - G)
Encroach
ment
Cleared
(A - G)
1PHASE-1 Compreh
ensive
developm
ent 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
Compreh
ensive
developm
ent 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

10. 10
Sl.No Phase
Total
No. of
Works
Estimated
Cost
In Crs
Expenditure
In Crs
Total No. of
Works
completed
Total
No. of
works
under
progres
s
Tenders
under
process
Revenue
certification
pending
Nos
1
Phase-1
Comprehe
nsive
developme
nt of Lakes 13 90.21 87.51 12 1 - -
2
Phase-2
Fencing
works
Comprehe
nsive
developme
nt of Lakes
32 19.50 3.70 15 17 - 16
- 541.50 - - - - -
3
Phase-3
Fencing
works 78 225 - 25 06 47 48
Total 123 876.21 91.21 52 24 47 64

11. Details of Revenue Certification, Rehabilitation, Sewage and Lake Feeding
ABSTRACT
Sl No Phase Category
of work
Total No.
of Works
Total No.
of Works
completed
Total No.
of works
under
progress
Total No
of lakes
for which
Revenue
certificatio
n /
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 Comprehe
nsive
developme
nt of
Lakes
13 12 1 03 05
(211)
- 03
2
PHASE-2 Fencing
works
32 15 17 16 17
(1031)
26 22
Comprehe
nsive
developme
nt of
Lakes
- - (07) - - - -
3
PHASE-3 Fencing
works
78 25 6 48 35
(1069)
55 37
Total 123 52 24 68 57
(2311)
81 62

12. B. NARAYANAPURA LAKE:- SEWAGE ENTRY
B. NARAYANAPURA LAKE: ENCROACHMENT IN TANK AREA

13. KALKERE- RAMPURA LAKE:- GARBAGE DUMPING SEWAGE ENTRY
VIBUTHIPURA LAKE:-
ENCROACHMENT & SEWAGE ENTRY

14. Chain link fencing to
Lingadeeranahalli Lake (32 Lakes)
Chain link fencing to
Chikkabettahalli Lake
(32 Lakes)

15. Chain link fencing of Gandhinagara Hosakere
Chain link fencing of Gandhinagara Hosakere
Barbed wire Fencing to Sooli Kere

16. Completed Projects – Mallathahalli LAKE (13 Lakes)
16Newly Commissioned 5.0 MLD STP near Malathahalli Lake

17. 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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18. Mallathahalli LAKE
18

19. Ullala Lake
During
After
Before
19

20. Kommaghatta Lake
During
After
Before
After Restoration
20

21. Sompura Lake
During
After
Before
21

22. 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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23. • 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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24.  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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