Lake Restoration Projects Being Undertaken by BDA_Bangalore Development AuthorityPresentation Transcript
BANGALORE DEVELOPMENT AUTHORITY PRESENTATION ON LAKERESTORATION PROJECTS BEING TAKEN UP BY B.D.A. 1
Bangalore Development AuthorityAims & 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.
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 encroachmentTo develop the lake as a fresh water storage pond For Flood Mitigation To Preserve the Lake to its original GloryTo develop the lake as a recreational centre. To preserve and recharge the depleting underground water table. 4
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
Methodology followed by BDA for Lake Restoration Projects 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 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
Location of Lakes • Phase I – 13 Lakes • Phase II – 32 Lakes • Phase III – 78 LakesLegend Primary SWD Secondary SWD WaterBodies BDA Boundary Phase I Phase II Phase III
STATUS OF LAKE RESTORATION WORKS TAKEN UP BY B.D.A.Sl No Phase Category Total No. Total No. Total No. Total No Lake Encroach Encroach of work of Works of Works of works of works Area ment ment complete under for which (A - G) Identified Cleared d progress Revenue (A - G) (A - G) certificati on / eviction orders pending 1PHASE-1 Compreh 13 12 1 -- 766 - 33 31 - 16 14 - 27 ensive developm ent of Lakes 2PHASE-2 Fencing 32 15 17 16 2373-37 57 - 36 04 - 24 works Compreh - - - - - - - ensive developm ent of Lakes 3PHASE-3 Fencing 78 25 6 48 1917-17 187 - 00 44 - 00 works Total 123 52 24 64 5057 - 37 276 - 12 63 - 11
Total No. of Tenders Revenue Total Estimated Total No. of Expenditure works under certificationSl.No Phase No. of Cost Works In Crs under process pending Works In Crs completed progres Nos s Phase-1 Comprehe 1 nsive developme nt of Lakes 13 90.21 87.51 12 1 - - Phase-2 Fencing works 32 19.50 3.70 15 17 - 16 2 Comprehe nsive developme nt of Lakes - 541.50 - - - - - Phase-3 3 Fencing works 78 - 25 06 47 48 Total 123 876.21 91.21 52 24 47 64 10
Details of Revenue Certification, Rehabilitation, Sewage and Lake Feeding ABSTRACTSl No Phase Category Total No. Total No. Total No. Total No Total No Total No Total No. of of work of Works of Works of works of lakes of Lakes of Lakes Lakes which completed under for which for which which are require progress Revenue rehabilitat polluted feeding of certificatio ion is by sewage treated n/ required water eviction orders pending PHASE-1 Comprehe 13 12 1 03 05 - 03 nsive (211) 1 developme nt of Lakes PHASE-2 Fencing 32 15 17 16 17 26 22 works (1031) Comprehe - - - - - - 2 nsive developme nt of Lakes PHASE-3 Fencing 78 25 6 48 35 55 37 3 works (1069) Total 123 52 24 68 57 81 62 (2311)
B. NARAYANAPURA LAKE:- SEWAGE ENTRYB. NARAYANAPURA LAKE: ENCROACHMENT IN TANK AREA
Chain link fencing to Chain link fencing toLingadeeranahalli Lake (32 Lakes) Chikkabettahalli Lake (32 Lakes)
Chain link fencing of Gandhinagara HosakereBarbed wire Fencing to Sooli Kere Chain link fencing of Gandhinagara Hosakere
Completed Projects – Mallathahalli LAKE (13 Lakes)Newly Commissioned 5.0 MLD STP near Malathahalli Lake 16
Completed Projects – Mallathahalli LAKE Sewage entry through SWD Sewage diverted to STP. before commissioning of STP No sewage entry into lake Lake filled with tertiary treated water Lake view after restoration after restoration 17
Mallathahalli LAKE 18
Before Ullala LakeDuring After 19
Kommaghatta Lake AfterBeforeDuring After Restoration 20
Before Sompura Lake After During 21
The following are the issues which had slowed down the progressof 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.
• 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 . 23
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.