Land-use and land-cover changes may have four major impacts on the hydrological cycle and water quality: they can cause floods, droughts and changes in river and groundwater regimes and they can affect water quality. In addition to these direct impacts there are also indirect impacts on climate and the subsequent impact of the altered climate on the waters. Urbanization the conservation of land to uses associated with the growth of population and economy is a significant land-use and land-cover changes especially in recent human history. One of the emerging problems in the urban area is the hanging land surface from pervious to impervious and obstruction in the drainage area. Reduction and decrease in the infiltration rate travel time which significantly increases peak discharge and runoff and collection of hydro-meteorological parameters are time consuming and expensive.. GIS is used to analysis spatially referenced data as it is efficient for storage, retrieval, and manipulation. The Objective of the study is to estimate the excess surface runoff of the watershed. To derive a storm hydrograph to the watershed for future runoff predictions and to validate the model using field observation.

Keywords: Urban runoff, GIS, Curve Number, Quick bird Satellite image.