Hypsometric properties of drainage basins in Karnataka using Geographical Information System

This study has been conducted to analyze the hypsometric properties of drainage basins in Karnataka. In constructing the hypsometric integral curve,a Digital Elevation Model (DEM) with300 m spatial resolution has been created based on the Triangulated Irregular Network(TIN). The topographical map has been used as a base map for generating contours to create the TIN model.The hypsometric integral curve results,derived from the DEM,show that six drainage basins are in Maturedly Dissected Land forms while the South Ponnar basin is in an old state of dissection.The result of hypsometric curve shows that the drainage basins are significantly different from each other. The Moran’s I shows a negative spatial auto correlation between the drainage basins and it indicates that HI values are random in the study area