Note: Intro -- Foreword by Dr. M. S. Swaminathan -- Foreword by Amitabh Kant -- Contents -- Emerging Issues in Water Resources Management: Challenges and Prospects -- 1 Introduction -- 2 Water Resources and Its Information Flow in India -- 3 Water Resources Assessment -- 3.1 Surface Water Resources -- 3.2 Groundwater Assessment -- 4 Quality of Water -- 5 Legal Provisions -- 6 Agriculture Water Management and Participatory Approach -- 7 Rejuvenation of Aquifers -- 8 Hydropower: Sustainability and Environmental Concerns -- 9 Floods and Droughts -- 10 Governance of Water -- 11 Stakeholders´ Participation -- 12 Capacity Development -- 13 Research and Innovations -- 14 Institutional Arrangements -- 15 Concluding Comments -- References -- Water Resources Assessment of Basins of India Using Space Inputs -- 1 Introduction -- 2 Objectives of the Present Study -- 3 The Study Area -- 4 Input Data, Methodology and Thematic Focus -- 4.1 Geospatial Database -- 4.1.1 Land Use and Land Cover -- 4.1.2 Soil Texture -- 4.1.3 Digital Elevation Model (DEM) -- 4.2 Hydrometeorological and Other Input Data -- 4.2.1 Rainfall Grids -- 4.2.2 Temperature Grids -- 4.2.3 River Discharge -- 4.2.4 Reservoir Flux -- 4.2.5 Groundwater Flux -- 4.2.6 Land Cover Coefficients -- 4.2.7 Domestic, Industrial and Livestock Demand -- 4.2.8 Evaporation from Major/Medium/Minor Reservoirs and Other Waterbodies -- 4.3 Broad Methodology -- 4.3.1 Land Cover Coefficients -- 4.3.2 Hydrological Response Unit Generation -- 4.3.3 Model Calibration and Validation -- 4.3.4 Water Resources Availability (WRA) -- 5 Results and Discussions -- 6 Implications of the Study -- 7 Uncertainty and Confidence Interval in Average Annual Water Availability -- 8 Limitations of the Study -- 9 Way Forward -- 10 Conclusions -- References. , National Aquifer Mapping and Management Programme: A Step Towards Water Security in India -- 1 Introduction -- 2 History of Hydrogeological Surveys in India -- 2.1 Aquifer Classification in India -- 3 Aquifer Mapping and Management Programme (NAQUIM) -- 3.1 Pilot Studies on Aquifer Mapping -- 3.1.1 AQBHR Bihar State -- 3.1.2 AQRAJ Rajasthan State -- 3.1.3 AQMAH Maharashtra State -- 3.1.4 AQKAR Karnataka State -- 3.1.5 AQTND Tamil Nadu -- 3.1.6 AQDRT Rajasthan -- 3.2 National Coverage of NAQUIM -- 3.3 Institutional Arrangement -- 4 Outputs and Achievement under NAQUIM -- 5 Conclusion -- References -- Managing and Sanctifying Water Bodies -- 1 Introduction -- 2 Main Threats to Water bodies in India -- 3 Assessing and Quantifying Sources of Pollution -- 4 Monitoring the State of Water bodies -- 4.1 Hydrological Status of Ganga -- 4.2 Water Quality Status of Ganga -- 4.3 Ecological Status of Ganga -- 5 Report Card of Orinoco River Basin: A Case Study -- 6 Managing Water bodies for Enabling Them to Provide Eco-services -- 7 Issues Related to Managing Wastewater -- 8 Sanctifying Water bodies: Applying Science with Traditional Wisdom -- 8.1 Interlinking of Water bodies at Local Scale (Town/Village) -- 8.2 Separating Sewage from Storm Water Drainage Network -- 8.3 Catchment Clean-Up -- 8.4 Traditional Knowledge and Science -- 9 Conclusion -- References -- Deterioration of Groundwater Quality: Implications and Management -- 1 Introduction -- 2 Various Groundwater Quality Issues in India -- 2.1 Geogenic Sources -- 2.2 Anthropogenic Sources -- 2.2.1 Agriculture -- 2.2.2 Industries -- 3 Aquifer Contamination Relation Dynamics -- 3.1 Spatial Variation in Groundwater Quality -- 3.2 Temporal Variations in Groundwater Quality -- 4 Impact on Public Health -- 4.1 Arsenic -- 4.2 Fluoride -- 4.3 Iron -- 4.4 Manganese, Uranium, Radon, Strontium, Chromium, and Selenium. , 4.5 Nitrate and Salinity -- 5 Mitigation Measures -- 5.1 Critical Concerns -- 5.2 Technology Options -- 6 Policies and Strategies for Groundwater Quality Management -- 6.1 International Practices -- 6.2 Indian Perspective -- 6.3 Groundwater Quality Data Assimilation -- 6.4 Institutional Issues for Policy Development -- 6.5 Capacity Building -- 6.6 Legislative Framework -- 6.7 Groundwater Quality Monitoring -- 6.8 Tools for Groundwater Quality Protection -- 6.9 Aquifer Mapping and Aquifer Modeling -- 6.10 Land-Use Planning and Management -- 6.11 Water Resource Management -- 6.12 Consultation and Participation -- 6.13 Mass Awareness and Social Empowerment -- 6.14 Issue of Social Convergence -- 6.15 Nutrition Management -- 7 Conclusion -- References -- Constitutional Provisions Related to Water and Integrated Planning and Management of a River Basin: A Review -- 1 Introduction -- 2 Constitutional Provisions -- 2.1 Specific Provisions -- 2.2 Other Related Provisions -- 3 Review of the Constitutional Provision Related to Water -- 3.1 Need for Review -- 3.2 Reviews Undertaken in the Past -- 3.2.1 Sarkaria Commission -- 3.2.2 National Commission on Integrated Water Resources Development -- 3.2.3 Punchhi Commission -- 3.2.4 Chawla Committee -- 3.3 Proposed National Framework Law -- 4 Integrated Planning for Water Resources -- 4.1 The Constitutional Logjam -- 4.2 Other Regulatory Mechanisms -- 4.3 Institutional Mechanism -- 4.4 Towards Consensus Building -- 5 Constitutional and Institutional Reforms for Better Management of Water Resources -- References -- Governing Groundwater: Fostering Participatory and Aquifer-Based Regulation -- 1 Introduction -- 2 Existing Groundwater Regulation and Shortcomings -- 2.1 Addressing a Mounting Crisis Without Changing the Rules: The 1970/2005 Model Legislation -- 2.2 Critique of the Existing Regulatory Framework. , 3 Groundwater Regulation in a Time of Increasing Scarcity: The Model Groundwater (Sustainable Management) Act, 2017 -- 3.1 Groundwater as a Common Heritage: Recognition as a Public Trust -- 3.2 Groundwater as a Local Source of Water: Subsidiarity and Decentralisation -- 3.3 Making the Right to Water a Reality Through Groundwater: Opportunities and Challenges -- 3.4 Conserving Groundwater: Groundwater Protection Zones and Groundwater Security Plans -- 4 Conclusion -- Farmers´ Participation in Managing Water for Agriculture -- 1 Introduction -- 2 Background: Why Farmers´ Participation in Managing Irrigation Water Is Important -- 2.1 The Environmental Settings for Irrigated Agriculture -- 2.1.1 All Pervasive Presence of the Government in Major and Medium Irrigation Projects -- 2.1.2 Rapidly Increasing Number of Small and Marginal Landholdings Which Are Not Economically Viable for Agriculture -- 2.2 The Participatory Irrigation Management Approach -- 3 History and Current Status of PIM -- 3.1 International Scenario -- 3.2 Indian Scenario -- 4 Impact of PIM -- 4.1 Uttar Pradesh Water Sector Restructuring Project Phase-1 (UPWSRP-1) -- 4.1.1 Increase in Irrigated Area -- 4.1.2 Equity in Irrigation in Head and Tail Areas -- 4.1.3 Reduction in the Cost of Silt Clearance of the Minors -- 4.2 Dharoi Irrigation Scheme of Gujarat -- 4.3 Waghad Project of Maharashtra -- 4.4 WUA-Managed Collective Action in Chhattisgarh Irrigation Development Project -- 5 Strengths of Successful Water Users´ Associations -- 5.1 Strengths of WUA -- 5.1.1 WUAs in Gujarat -- 5.1.2 WUAs in Maharashtra -- 5.2 Good Practices by WRD/Line Agencies Contributing to Success of WUAs -- 5.2.1 Supplying Irrigation Water Through WUAs -- 5.2.2 Supplying Irrigation Water on Volumetric Basis/Per Irrigation Basis -- 5.2.3 Consultation with WUAs in Construction and Rehabilitation Work. , 5.2.4 Special Treatment to WUAs in Carrying Out New Works, Remodelling and Rehabilitation Works -- 5.2.5 Taking Assistance from NGOs in Formation and Capacity Building of WUAs -- 6 Critical Issues in Upscaling of PIM -- 6.1 PIM Acts Should Be Farmer-Friendly, Simple and Practical -- 6.2 Need to Adopt a Step-by-Step Approach for Large Systems -- 6.3 The WUAs Shall Have to Extend Their Scope -- 6.4 WUAs Must Be Sustainable Without Subsidies -- 6.5 WUAs Should Be Made Capable to Manage the Environment -- 6.6 Training Is Required at All Levels -- 6.7 Government Agencies Need to be Reoriented -- 6.8 Effective Monitoring of WUAs at Each Level -- 7 Conclusions and Recommendations -- Bringing Aquifers and Communities Together: Decentralised Groundwater Governance in Rural India -- 1 Introduction -- 2 The Need for a Groundwater Governance Framework -- 3 Groundwater Governance: The Global Context -- 4 Groundwater Governance in India -- 4.1 The Emerging Dimension of Groundwater Competition -- 4.2 Integrating Science, Participation and Regulation Towards a Governance Framework -- 5 Conclusion: Towards a Decentralised Groundwater Governance Framework -- References -- Rejuvenation of Aquifers -- 1 Introduction -- 2 Rainfall and Climate -- 3 Status of Ground Water Resources: a Historical Perspective -- 4 Situational Analysis -- 5 Ground Water Recharge Potential and Scope of Rejuvenation of Aquifers -- 5.1 Assessment of Recharge Potential of Aquifers -- 5.2 Surplus Water Resource Availability -- 5.2.1 The Himalayan Rivers -- Mountain Area -- Alluvial Terrain -- 5.2.2 Deccan and Coastal Rivers -- 5.2.3 Inland Drainage Area -- 6 Way Forward -- References -- An Untold Story of Groundwater Replenishment in India: Impact of Long-Term Policy Interventions -- 1 Introduction -- 2 Methodology -- 2.1 In Situ Groundwater-Level Observations. , 2.2 Aquifer-Specific Yield Computation.