CONTENTS 1. INTRODUCTION V.1-1toV.1-5 1.1Objective of the specific studies 1.2Organisation of the specific studies 1.3Organisation of the project 2 KHAMBHAT CLOSURE V.1 -7 to V.1 -10 2.1Genera! 2.1.1Hydraulic conditions 2.1.2 Closure techniques 2.2 Dam alignment and elements 2.2.1Considerations 2.2.2 Alternative dam alignment 2.2.3 Alternative power house concept 2.2.4 Spillway 2.2.5Proposed closure works 2.2.6Construction schedule 3 TIDAL POWER DEVELOPMENT V.1-11 to V.1-28 3.1Tidal power background 3.2 Approach to the specific studies 3.3 Technical issues affecting Project Design 3.4 Proposed tidal power generation scheme 3.4.1Dam alignment 3.4.2Evacuation of power generated 3.5 Tidal power generation computations 3.6The absorption of tidal energy 3.7Costs and schedules 3.8 Energy economics of tidal power generation 3.9Effect of barrage on tidal range 3.10Techno-economic assessment 3.11 Environmental issues for future study 3.12 Recommended Terms of Reference for Feasibility Study 3.13 Conclusions 4 IRRIGATION AND WATERSUPPLY DEVELOPMENT V.1-29 to V.1-32 4.1 Water availability for irrigation 4.1.1Fresh water availability 4.1.2 Domestic and industrial water demands 4.1.3 Irrigation potential 4.2 Irrigable areas 4.2.1Irrigation water requirements 4.2.2 Command area and main canal 5.LAND RECLAMATION AND DRAINAGE IMPROVEMENT V.1-33 to V.1-34 5.1Reclaimable areas 5.2 Reclamation method and water requirement . 5.3 Drainage needs for reclamation and prevention of water logging 6 WATERBORNE TRANSPORT DEVELOPMENT V.1 -35 to V.1 36 6.1Terrestrial transport development 6.2 Waterborne transport development 6.2.1 Port development 6.2.2 Inland waterway transport on the Narmada River 7 ENVIRONMENTAL IMPACTS V.1-37 TO V.1-58 7.1 General 7.2 Baseline assessment 7.2.1Physio-chemical aspects 7.2.2Ecological aspects 7.2.3Socio-economic aspects 7.3 Developments without KALPASAR 7.4 Potential impacts KALPASAR 7.4.1Summary of anticipated impacts 7.4.2 Water qua 7.4.3 Water pollution 7.4.4 Mitigating measures 7.5 KALPASAR sedimentation 7.5.1General 7.5.2 Sediment loads 7.5.3 Sedimentation in KALPASAR fresh water reservoir 7.5.4 Sedimentation in KALPASAR tidal power basin 7.6 Hydraulic and morphologic changes 7.6.1Morphological changes and flood levels along former estuaries 7.6.2 Tidal wave reflection 7.6.3 Morphological changes at the sea-side of the closure dam 8. PLAN OF ACTION .V.1-59 TO V.1-62 8.1General 8.2 Studies and investigations 8.3 Institutional framework 9. OUTLINE TERMS OF REFERENCE FOR PREPARATION V.1-63 to V.1-74 OF FEASIBILITY PROJECT REPORT 9.1 General 9.2 Establishment of comprehensive data base and geographical information system 9.3 Environment issues 9.4 Regime modelling 9.5 Water quality issues 9.6 Salt balance issues 9.7 Hydraulic and morphologic issues 9.8 Irrigation issues 9.9 Land reclamation issues 9.10 Water supply issues 9.11 Field invetigations for engineering studies 9.12 Engineering 9.3 Construction approach and estimates 9.14 System design 9.5 Economics and financing FIGURES Figure -1 Layout of Single Basin Figure -2 Layout of Double Basin Figure -3 Chloride Concentrations versus Time, Single Basin Stage -iii,90 years. Figure - 4 Tentative time schedule for plan of action. APPENDICES Appendix-1 Organisation of Specific Studies Appendix-2 Waterborne transport development