Quantitative Morphometric Analysis Using Remote Sensing and GIS Techniques for Mandakini River Basin

Abstract

Abstract The current research in the State of Uttarakhand in Rudraprayag argued that the analysis of the morphometric drainage parameter is more appropriate than traditional approaches with a remotely sensed information and GIS-based approach. Various linear, aerial and relief aspects were considered to analyse study area morphometry and the digital elevation model (DEM) and catchment area slope map were created from 30 m resolution ASTER data. The drainage patterns were mainly dendritic to sub dendritic. The study area’s slope was divided into five ranging from 0° to 77°. The study area’s stream order ranged from 1st order to 7th order. The variation in the stream length ratio could be due to the disparity in slope and topographical conditions. Geometric characteristics in the region suggest that the area appeared to have an extended shape with an elongation ratio of 0.76 and less circulatory shape with a circulatory ratio of 0.47 suggests the varied homogenous geological and texture ratios preferred for its high texture ratio of 28.77 disfigured complex lithology. In topography and geographic growth, the range of the bifurcation ratio in the catchment area was between 3.84 and 5.30. The drainage level was medium at 2.34 km2. The drainage texture was 38.10 demonstrating the nature of lithology.