Water is a valuable resource for the economic development of a region. Due to the uneven distribution of rainfall over time and space in India, water storage reservoirs are necessary for ensuring adequate and sustained water supply throughout the year. Sediment erosion in the catchment, transport of sediment through river channels and deposition of sediment in different parts of the reservoir affect in reducing the capacity of the reservoir. The Satellite Remote Sensing (SRS) technique has been used to estimate the loss in capacity due to sedimentation in a cascade of reservoirs comprising Warasgaon, Panshet and Khadakwasla under the Khadakwasla Dam Project Circle (KDPC) for water supply in Pune district, Maharashtra. Loss in capacity of these reservoirs for the same period was assessed to study the combined effect of depletion of storage in KDPC on the demand of water supply. Further, the projected increase in population is utilized to assess the future water requirement for Public Water Supply to four Tahasils of Pune district through the KDPC by the year 2025. Suggestions to improve storage capacity and necessary measures to reduce the gap between supply and demand for future years are also discussed in this paper.
Sedimentation, Remote sensing, Supply and Demand, Depletion in storage
