The Utilization of Global Digital Elevation Model for Watershed Management a Case Study: Bungbuntu Sub Watershed, Pamekasan

This paper reviewed mapping of Bungbuntu watershed using Aster GDEM and SRTM DEM. The main difference is Aster GDEM using thermal, whilst radiometric images and SRTM using radar wavelength. These DEMs were used to determine Bungbuntu watershed boundary using hydrology and geomorphology analyses. The results showed Aster GDEM and SRTM have significant different values compared to BPDAS (Government Field Data) but generally morphometric information was still in the same class range. However, DEM generation failed to determine channel network. DEM produced by SRTM had better elevation accuracy than Aster GDEM contrary to the resolution of elevation on each DEM source.