Estimation of Morphometric and Morphotectonic Indices of the Kanhan River Basin, Central India, Implication for Susceptibility of Soil Erosion and Groundwater Potential
摘要
The Kanhan River, the Wainganga’s longest tributary, runs through the central Indian districts of Chhindwara and Nagpur. The SRTM, remote sensing, and GIS data, were used to investigate morphometric and morphotectonic indices of the Kanhan River Basin and these parameters (linear, areal, and relief) were further employed to assess the vulnerability of the basin to soil erosion, flood hazards, groundwater potential, and tectonic activity. Several morphotectonic parameters including lineament, lineament density, sinuosity, hypsometric integral, and drainage basin asymmetry were estimated for the Kanhan River Basin (KRB). The lineament density was validated across five classes ranging from 0 to 0.91 km/km2. We observed that a high lineament density indicates a high ground water potentiality. The hypsometric integral value (HI = 0.315) suggests that the Kanhan River is in its old or monadnock stage. The Standard Sinuosity Index (SSI) infers that the river follows a sinuous course. The Hydraulic Sinuosity Index (HSI = 61%) suggests that the river has developed flood plains during excessive flooding. The transverse topographic symmetry (TTS) ranges from 0.07 to 0.57, which shows that the basin has an asymmetric nature. Based on these findings, we can interpret that the elongated basin dominated by the old stage is represented by low stream frequency, high permeability, mild slope, and low surface runoff.