Abstract
AbstractPresent work analyzes the morphometric characteristics and sub-basin prioritization of coastal regions of Tamil Nadu in India to comprehend the drainage basin’s geo-hydrological characteristics using geospatial techniques. Digital Elevation Model (DEM) is obtained from the Shuttle Radar Topographic Mission (SRTM) with 30 m spatial resolution. Overall, seven linear aspects, ten areal aspects, and four relief aspects of the basin’s morphometric characteristics were evaluated. Drainage network of the study region shows a dendritic pattern with sixth order stream network. Mean bifurcation ratio and stream length ratio of sub-basins are measured which substantiates the fact that the drainage pattern is not predisposed by geological developments and instabilities in the recent past. The elongation ratio is more than 0.9, inferring the sub-basins to be similar to a circular form. For soil and water conservation practices, the analysis prioritizes 5 sub-basins as high, medium and low. Geospatial technology has thus proven to be highly useful in collecting and haul out the correct information for assessing and investigating the characteristics of the watershed.KeywordsMorphometric AnalysisSub-basin PrioritizationDigital Elevation ModelTamil Nadu Coast
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