Prioritization of the micro-watersheds through morphometric analysis in the Vasishta Sub Basin of the Vellar River, Tamil Nadu using ASTER Digital Elevation Model (DEM) data

R Poongodi,S Venkateswaran

doi:10.1016/j.dib.2018.08.197

Abstract

The dataset for this article includes morphological analysis of the level to which groundwater potential of the Vasishta River, Salem and Perambalur districts of Tamil Nadu. The method for the computation of morphometric parameters using data Digital Elevation Model (DEM) of the Vasishta River, is also prepared using SRTM (Shuttle Radar Topographic Mission) 90 m resolution data Morphometric parameter linear, aerial and relief limits, such as a bifurcation ratio (Rb), Drainage density (Dd) Stream Frequency (Fs) Elongation ratio (Re), Length of overland flow (Lg), Relief ratio, ruggedness number (Rn) and Slope (sb) of Vasishta Sub Basin (VSB). The relief ratio indicates that the discharge should be considered high priority given to the following micro-watersheds numbers 9,1,15,11 and 10. This data could be very useful to help with sustainable groundwater planning in any similar basins.

Highlights

Prioritization of the micro-watersheds through morphometric analysis in the Vasishta Sub Basin of the Vellar River, Tamil Nadu using ASTER
The relief ratio indicates that the discharge should be considered high priority given to the following micro-watersheds numbers 9,1,15,11 and 10
The main river Vasishta originates from the southern slope of the Kalrayan hills and flow through kurchi, Belur, Pethanaickenpalayam, Attur, Pattuthurai, Thalaivasal, Aragalur, Sitheri, Villages of Salem and Perambalur districts of Tamil Nadu

Summary

Data accessibility

The morphometric parameters of all the sub basin were calculated using ArcGIS 9.3 Software. The data includes morphometric analysis of the Vasishta River Salem and Perambalur districts of. The quantitative morphometric analysis was carried out in seventeen micro-watersheds of VSB catchment using GIS technique for determining [1] the linear aspects, such as Stream order,. India (SOI) topographic map and from georeferenced satellite data for a large area is a time consuming and tedious exercise. To overcome this problem, automatic extraction techniques were used for evaluating the morphometric factor of a basin.

Study area

Compound factor and ranking