Hydrological appraisal of nariganipalli watershed (India) using spatial information technology

The basic intent of the present study is to derive the parameters required for runoff modeling using the geospatial database and estimate the runoff of Nariganipalli watershed. During the basic data preparation stage of the study, the land use map and the digital elevation model covering the study area were derived with the help of remotely sensed information. Shuttle Radar Topographic Mission data have been imported into soil and water assessment tool (SWAT) project to start watershed delineation. By providing all the inputs for the model set up, SWAT model was simulated for the period of two years (2012–13). Results of streamflow were validated with the observed data of Nariganipalli watershed. Though the rainfall in the watershed is 72.5 mm annually there is a deficiency in water in the watershed. Total requirement of water in the watershed is 93.01 ha m and available water is 68.5737 ha m. This statistics tells that there is huge difference between available water and required water. These types of models will help to reduce the water deficiency and can be utilized as a potential tool for water resource management at Nariganipalli watershed.