Vol. 11, Special Issue 11 (2022)

A Watershed is an ideal unit for the management of resources like land and water for mitigation of the impact of natural disasters for achieving sustainable development. SRTM DEM data at 30m spatial resolution have been used for the analysis. In the present study, RS and GIS technique is used to estimate the geomorphological parameters and delineation of the watershed. The research is carried out in the Chatav watershed in Khed tehsil of Ratnagiri district, Maharashtra. The study area is located between 17°45'28.8''N Latitude and 73°32'06.0''E Longitude. The total geographical area under study is 17700 ha. The average annual rainfall in the study area is 3511 mm and the mean temperature is 23.8 ℃. Linear, areal, and relief aspects of the watershed were estimated. The results revealed that the basin has 4^th order drainage network. The mean bifurcation ratio is 1.68 which indicates, the drainage pattern has strong structural control. The value of drainage density indicates the dense vegetation cover and low relief. The low relative relief indicates that peak discharge rates and catchment erosion are likely to be low. The study will be useful for the planning of watershed harvesting and groundwater recharge projects on a watershed basis.