MORPHOMETRY ANALYSIS OF SILAT SUB-WATERSHED BASED ON GEOSPATIAL TECHNOLOGY IN THE SILAT HULU SUB DISTRICT

<p>This study aims to obtain morphometric data from the Silat sub-watershed. The method used is a survey and interpretation of secondary data. Secondary taken Remote Sensing Images, Topographic Maps, Administration maps. were area, shape, circumstance, river length, order, height, drainage density. Data analysis using Spatial Analyst Tool, namely Hydrology, Map Algebra, Density tools ArcGis 10.8. Based on research results, it known that watershed has an area 466 km², circumference 147 km, length 51 km. shape elongated because Circularity Ratio value 0.27 (<0.5), Elongation 5.14 (round). order network up 6, with branching index (Rb) 1 = 2.03; 2nd 2.09; 3rd 1.75; 4th 1.84; 5th 0.96. Weighted Average Branching Index (WRb) was 2.73 (<3). sub-watershed height 32 - 255 meters above sea level. Low density, dendritic flow pattern. <em></em></p>