Morphometric Analysis And Prioritization Of Purinbal Sub-Watershed Of Sindh Catchment For Soil And Water Resource Management Using Geo-Spatial Tool

Research Article
Sheikh Umar., Saika Manzoor and Mohd Ayoub Malik
DOI: 
http://dx.doi.org/10.24327/ijrsr.2017.0811.1101
Subject: 
science
KeyWords: 
Arc GIS, Toposheets, Compound Value, Morphometric parameters.
Abstract: 

Watershed prioritization has gained importance in natural resources management, especially in the context of watershed management and morphometric analysis has been commonly applied to prioritization of watersheds (Javed et. al., 2009). The prioritization process identifies the highest priority watersheds in which to conduct management. Morphometric analysis has been commonly applied to prioritization of watersheds as watershed characteristics of a basin represent its physical and morphological attributes that are employed in synthesizing its hydrological response. The present study makes an attempt to prioritize micro-watersheds based on morphometric parameters and GIS techniques in Sindh Catchment of Ganderbal district, Jammu and Kashmir. Various morphometric parameters, namely linear parameters and shape parameters have been determined using Survey of India (SOI) toposheets at 1:50,000 scale for each micro-watershed and assigned ranks on the basis of value/relationship so as to arrive at a computed value for a final ranking of the micro-watersheds. The analysis has revealed that the total number as well as total length of stream segments is maximum in first order streams and decreases as the stream order increases. Horton‘s laws of stream numbers and stream lengths also hold good. The slope model for the study area was generated from the contours of Survey of India (SOI) topo sheets at 1:50,000 scale following a 40 m contour interval. Results of prioritization of micro-watersheds based on morphometric analysis show that micro-watershed SSM-1 fall under very severe erosion class and are more susceptible to soil erosion.