fish depth Ponds Inflow sewage plants debris habitat erosion insects concept Methods wildlife overflow rainwater landscape pond banks amphibians irrigation pond bottom heavy rains groundwater crucial role significance Rejuvenating biodiversity water levels vital practice allegianceindia Local residents accumulated silt local ecosystems ecological value outflow channels Pond Rejuvenation community efforts pollution sources nearby vegetation natural reservoirs ecological balance Outflow Management Water Conservation government agencies agricultural runoff Ecological Importance Allegiance Enterprise Vegetation Management water-holding capacity Community Participation Water Quality Enhancement native aquatic vegetation various aquatic organisms environmental organizations Allegiance Water Management