Analysis of GIS Based Morphometric Parameters and Hydrological Changes in Indrawati River Sub-Basin of Godawari Basin, Chhattisgarh, India

Basin is main carrying surface of rainwater collected from basin area and moves to main drain as river system. The basin surface characteristic governs the movement, storage and drainage in basin due to rainwater. Morphometric analysis is a quantitative description of a basin with important aspect of the basin character. Godawari basin divided into five sub-basins. Indrawati is main tributary river of Godawari originated from Mardiguda, Dandakarnya range of Kalahandi district, Odisha. The basin includes BastarCraton covering a large area (>2105 km2) in Central India, bounded by two Mesoproterozoic mobile belts, the Eastern Ghats Mobile Belt (EGMB) to the east, Satpura Mobile Belt to the northwest, and two major Palaeozoic tectonic features the Godavari Graben to the southwest and the Mahanadi Graben in the northeast. The basin has been extracted using Advanced Space borne Thermal Emission and Reflection Radiometer (ASTERGDEM)30 m (USGS, 2012) images by giving pour points and it has been projected on WGS 1984 UTM zone 45 for the morphometric analysis was used. Morphometric analysis expresses various aspects of basin characters which are 8 stream order (u), 85636 stream number, 42259.27 Stream length (Lu) (km), 0.493 Mean Stream length (Lsm), 3.144 Bifurcation ratio (Rb), 0.002 Length of overland flow (Lg), 0.110 drainage density (Dd), 3.088 Stream frequency (Fs), 1.220 Form factor (Ff), 2.634 Circulatory ratio (Rc), 0.0040 Elongation ratio (Re), 6.348 Leminscate method (k) and 1.758Reliefratio of Indrawati basin.