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INDIAN JOURNAL OF GEOMORPHOLOGY, Volume 23 (2), July-Dec., 2018, pp.139-153

Morphometric Analysis of the Sapan River Sub-Basin of the Purna River Maharashtra, Using Geospatial Techniques

B. S. Manjare*, M.P. Patre**, S.K. Paunikar**, S. M. Tale*** 
 
*Assistant Professor, Department of Geology RTM Nagpur University, Nagpur (MS) India
**P.G. Student of Department of Geology RTM Nagpur University, Nagpur (MS) India
***COETA-  Akola SGB Amravati University
 
Abstract
 
A morphometric analysis of Sapan river basin has been carried out using remote sensing and GIS techniques. This technique is found relevant for the extraction of river basin and its drainage networks. The study shows the dendritic to sub‑dendritic drainage pattern. The study area has total 1587 streams linked with seventh-order of stream sprawled over an area of 513.35 sq km of which 1226 are of 1st order, 285 are of 2nd order, 54 are of 3rd order, 14 are of 4th order, four are of 5th order, four are of 6th order, one is of 7th order which indicate that the highest number of streams are in 1st order and number of stream decreases with increase in stream order. In the study area value of elongation ratio varies from 0.29 to 0.77, indicating that the study area is elongated with moderate relief and steep slopes. The drainage texture found to be very coarse in general, while SW-1 shows the variation having very fine texture of  11.61 due to higher number of streams. The study shows that remote sensing data with geoprocessing techniques prove to be a competent tool in morphometric analysis and the data can be used for basin management and other hydrological studies for other sub-basins.
 
Key words: Sapan River, Remote Sensing and GIS