GEOGRAPHICAL INFORMATION SYSTEM BASED WATERSHED DELINEATION IN SOUTHERN HARIPUR TEHSIL KHYBER PAKHTUNKHWA PROVINCE, PAKISTAN

Abstract

Presented study was to delineate the main watersheds and sub watersheds of Southern Haripur Tehsil, using the GIS (Geographical Information System) techniques. In this study, Arc GIS 9.3 software, spatial Analyst and Arc Hydro tool extension was used to delineate the watershed areas of Southern Haripur Tehsil in detail. DEM (Digital Elevation Model) data of SRTM (Shuttle Radar Topographic Mission) having 90 by 90 meter resolution of USGS was used for this watershed analysis. It was find out that the Southern Haripur Tehsil is comprised of 7 main watersheds out of which atershed of Dor River contributes to Tarbela dam, 35 sub-watersheds out of which one contributes to hanpur dam, No. of streams of watersheds, their drainage pattern, drainage points, trace origins and areas in Sq.Km of main and sub watersheds of Southern Haripur Tehsil.