Morphometric Analysis of Penna sub-basin in Nellore District using RS and GIS

The study of morphometric analysis of Penna sub-basin has been conducted based on the secondary source, the SRTM data has been downloaded from GLCF website. The downloaded data has been analyzed using ArcGIS software, to study the Linear, Relief and Arial aspects of drainage basin retrieved that, total numbers of streams are 443, in that 181 are first orders, 158 are second orders, 57 are third orders, 45 are fourth orders and 2 are fifth order streams. The streams have been formed in dendritic drainage pattern. The length of stream segments is maximum for first order stream and decreases as the stream order increases. The result of drainage density shows the value 0.286 per square kilo meters in study area, which suggesting that there is more possibility of infiltration, and less surface runoff, highly permeable subsoil and vegetation.