Evaluation of Watershed Parameters Using RS and GIS

Identification and delineation of Land use/ Land cover, location, extent and their spatial distribution patterns are possible through Remote Sensing (RS) because of its synoptic view and its ability to resolve both macro and micro details on a single imagery. The preliminary objective of this paper is to evaluate watershed parameters using remote sensing and geographic information systems for Palleru sub basin (K-11) of River Krishna, Andhra Pradesh, India for a period of 1989 to 2002. NDVI concept has been used to evaluate land use/ land cover in this study area. Spatial and temporal variations were analyzed. Four classes were identified in the study area. Further, the secondary objectives of the present study is to develop different maps like slope map, soil map, contour map, flow direction map, flow accumulation map, mandal wise administrative boundary map, Digital Elevation Model (DEM) map, Thiessen polygon coverage, Aspect map, Viewshed map and drainage map in GIS environment. To prepare Land use /Land Cover map using ERDAS through Satellite imageries. The extracted watershed parameters will be useful in watershed hydrology and irrigation water management effectively.