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SCS-CN and GIS-based approach for identifying potential water harvesting sites in the Kali Watershed, Mahi River Basin, India

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Title SCS-CN and GIS-based approach for identifying potential water harvesting sites in the Kali Watershed, Mahi River Basin, India
 
Creator RAMAKRISHNAN, D
BANDYOPADHYAY, A
KUSUMA, KN
 
Subject hydrologic model casc2d
runoff volume
soil-moisture
simulation
area
gis
runoff potential
water harvesting
site suitability
 
Description The Kali sub-watershed is situated in the semi-arid region of Gujarat, India, and forms a part of the Mahi River Watershed. This watershed receives an average annual rainfall of 900 mm mainly between July and September. Due to high runoff potential, evapo-transpiration and poor infiltration, drought like situation prevails in this area, from December to June almost every year. In this paper, augmentation of water resource is proposed by construction of runoff harvesting structures like check dam, percolation pond, farm pond., well and subsurface dyke. The site suitability for different water harvesting structures is determined by considering spatially varying parameters like runoff potential, slope, fracture pattern and micro-watershed area. GIS is utilised as a tool to store, analyse and integrate spatial and attribute information pertaining to runoff, slope, drainage and fracture. The runoff derived by SCS-CN method is a function of runoff potential which can be expressed in terms of runoff coefficient (ratio between the runoff and rainfall) which can be classified into three classes, viz., high (>40%), moderate (20-40%) and low (
 
Publisher INDIAN ACAD SCIENCES
 
Date 2011-08-01T22:58:17Z
2011-12-26T12:53:32Z
2011-12-27T05:39:51Z
2011-08-01T22:58:17Z
2011-12-26T12:53:32Z
2011-12-27T05:39:51Z
2009
 
Type Article
 
Identifier JOURNAL OF EARTH SYSTEM SCIENCE, 118(4), 355-368
0253-4126
http://dspace.library.iitb.ac.in/xmlui/handle/10054/8568
http://hdl.handle.net/10054/8568
 
Language en