ESTIMATION OF MORPHOMETRIC PARAMETERS AND RUNOFF USING RS & GIS TECHNIQUES

Land and water are the two vital natural resources, the optimal management of these resources with minimum adverse environmental impact are essential not only for sustainable development but also for human survival. Satellite remote sensing with geographic information system has a pragmatic approach to map and generate spatial input layers of predicting response behavior and yield of watershed. Hence, in the present study an attempt has been made to understand the hydrological process of the catchment at the watershed level by drawing the inferences from moprhometric analysis and runoff. The study area chosen for the present study is Yagachi catchment situated in Chickamaglur and Hassan district lies geographically at a longitude 7552’08.77”E and 1310’50.77”N latitude. It covers an area of 559.493 Sq.km. Morphometric analysis is carried out to estimate morphometric parameters at Micro-watershed to understand the hydrological response of the catchment at the Micro-watershed level. Daily runoff is estimated using USDA SCS curve number model for a period of 10 years from 2001 to 2010. The rainfall runoff relationship of the study shows there is a positive correlation