NIH three Years field India Rivers misuse expert access efforts neglect problem Roorkee wetland diseases solution approach Advocacy villages Hydrology awareness Challenges water woes dependence Uttarakhand Initiatives communities encroachment Dr. VC Goyal MNREGA funds water bodies solid debris local bodies crucial role Deterioration Uttar Pradesh village ponds Opportunities Stagnant water water security local aquifers storage capacity pressing concern rejuvenated ponds local land mafias significant number domestic wastewater safe drinking water serious water crisis significant projects unsustainable levels acute water shortages Allegiance Enterprise The National Institute District administrations Long-Term Sustainability pond rejuvenation projects Allegiance Water Management rapid groundwater depletion