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Operation, Monitoring and Decommissioning of Large Dams in India

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Operation, Monitoring and Decommissioning of Large Dams in India Contributing Paper Operation, Monitoring and Decommissioning of Large Dams in India Dr V.P. Jauhari Environment, Forests, Science & Technology Department; Andhra Pradesh State; India Prepared for Thematic Review IV.5: Operation, Monitoring and Decommissioning of Dams For further information see http://www.dams.org/ This is one of 126 contributing papers to the World Commission on Dams. It reflects solely the views of its authors. The views, conclusions, and recommendations are not intended to represent the views of the Commission. The views of the Commission are laid out in the Commission's final report "Dams and Development: A New Framework for Decision-Making". World Commission on Dams. ii IV.5, Options Assessment- Large Dams in India- December 1999 Disclaimer This is a working paper of the World Commission on Dams - the report herein was prepared for the Commission as part of its information gathering activity. The views, conclusions, and recommendations are not intended to represent the views of the Commission. The Commission's views, conclusions, and recommendations will be set forth in the Commission's own report. World Commission on Dams 5th Floor, Hycastle House 58 Loop Street PO Box 16002 Vlaeberg, Cape Town 8018, SOUTH AFRICA Telephone: +27 21 426 4000 Fax: +27 21 426 0036 Email: [email protected] http://www.dams.org This is a draft working paper of the World Commission on Dams. The report herein was prepared for the Commission as part of its information-gathering activity. The views, conclusions, and recommendations are not intended to represent the views of the Commission. World Commission on Dams. iii IV.5, Options Assessment- Large Dams in India- December 1999 Content 1. INTRODUCTION........................................................................................................... 1 1.1 Irrigation Strategy.......................................................................................................................... 1 1.2 Irrigation Development through the Plan periods - Overview ...................................................... 1 1.3 National Water Policy ................................................................................................................... 2 2. Dam Building Activity in India since 1900 ...................................................................5 2.1 Completion of Pending Works vs Starting New One’s – Private Sector Participation................. 5 2.2 CONCLUSION ............................................................................................................................. 7 2.3 Completion of Pending Works Vs Starting New........................................................................... 9 2.4 Private Sector Participation ........................................................................................................... 9 2.5 Increase in cost of creation of irrigation potential....................................................................... 11 3. DAM SAFETY & FUNCTIONING – ROLE OF DIFFERENT VARIABLES......14 3.1 Factors Affecting the Dam Safety:.............................................................................................. 16 3.1.1 Geology and Hydrogeology ...............................................................................................16 3.2 Table – 3.2................................................................................................................................... 17 3.3 Reported cases of Reservoir-induced seismicity greater than magnitude 4.0 ............................. 17 3.4 Table – 3.3................................................................................................................................... 23 3.5 Name of reservoir........................................................................................................................ 23 3.6 Annual rate of siltation................................................................................................................ 23 3.7 Observed...................................................................................................................................... 23 4. Table – 3.4...................................................................................................................... 24 4.1 Name of reservoir........................................................................................................................ 24 4.2 Annual rate of siltation................................................................................................................ 24 4.3 Observed...................................................................................................................................... 24 5. Table – 3.5...................................................................................................................... 27 6. Depicting Sedimentation Rates in some Indian Reservoirs.......................................28 6.1 Name of Dam .............................................................................................................................. 28 6.2 Type of catchment....................................................................................................................... 28 6.3 Table – 3.6................................................................................................................................... 28 6.4 Period .......................................................................................................................................... 28 6.5 Year 1959-1965........................................................................................................................... 28 6.6 Year 1965-1973........................................................................................................................... 28 7. Table – 3.9...................................................................................................................... 36 7.1 Table – 3.10................................................................................................................................. 36 8. Electric conductance of ground water samples at Nagarjunasagar Command Area40 8.1 Tables 3.12 to 3.14 ...................................................................................................................... 40 This is a draft working paper of the World Commission on Dams. The report herein was prepared for the Commission as part of its information-gathering activity. The views, conclusions, and recommendations are not intended to represent the views of the Commission. World Commission on Dams. iv IV.5, Options Assessment- Large Dams in India- December 1999 Figure – 3.4.............................................................................................................................. 58 10. Causes of Dam Failures ................................................................................................ 59 10.1 Location....................................................................................................................................... 75 10.2 Type 75 10.3 Block 9 – OF ............................................................................................................................... 76 10.4 Block 18 - NOF ........................................................................................................................... 76 10.5 Working....................................................................................................................................... 76 10.6 Working....................................................................................................................................... 76 10.7 Instruments .................................................................................................................................. 77 10.8 77 10.9 Number........................................................................................................................................ 77 10.9.1 Table – 3.13........................................................................................................................83 10.9.2 Instrument Reliability.........................................................................................................83 10.10 Instrument.................................................................................................................................... 83 11. The institutional development in States to assure the safety of dams, vis-à-vis the role of World Bank was first discussed in a special meeting held at Nasik (Maharashtra) on 25.5.1989 which was attended by Members of the National Committee on Dam Safety (NCDS) and Mr. G.W. Fauss of World Bank. During the discussions, the States were told about the need for assured funding for rehabilitation of projects where deficiencies have been identified, without which the periodic inspections through the upgraded dam safety programme may not be of arty use....................................................................................................................... 99 11.1 Implementation of the Project: .................................................................................................. 100 11.2 Centre - CWC............................................................................................................................ 101 11.2.1 Status of remedial works..................................................................................................106
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