IDENTIFIKASI MORFOMETRI DAS SERANG DARI CITRA SRTM

Abstract

The research location is the Serang watershed which is included in Kulon Progo Regency, Yogyakarta Special Region. This study aims to determine the morphometric aspects of the Serang watershed by calculating the area, length, circumference, order and branching of the river, river density, and drainage patterns based on the appearance recorded on the SRTM image. This research was conducted using the main methods of interpreting SRTM remote sensing images and calculating watershed morphometry using ArcGIS software. The calculation results obtained that the Serang watershed area is 305.404 km², the river length is 27.25 km, the watershed circumference is 107.353 km, the branching level of the river is 2.45, the river channel density is 0.089. Based on the above results, the Serang watershed is controlled by tectonics with good rock porosity so that the infiltration rate is high..