Volume No. 10 Issue No.: 1 Page No.: 187-200 July-September 2015

 

PRIORITIZATION BASED ON GEOMORPHIC CHARACTERISTICS OF AHAR WATERSHED, UDAIPUR DISTRICT, RAJASTHAN, INDIA USING REMOTE SENSING AND GIS

 

Syed Ahmad Ali* and Javed Ikbal

Department of Geology, Aligarh Muslim University, U.P., (INDIA)

 

Received on : March 10, 2015

 

ABSTRACT

 

Now a day natural resources like land, soil and water is getting degraded, eroded and polluted. It is our prime duty to conserve the limited resources which should be categorically studied at watershed level. In this regard, the present study was carried out to assess linear and shape morphometric parameter in 7 sub-watersheds of the Ahar watershed and their prioritization for soil and water resource management. The drainage network and morphometric parameters were delineated and computed by using Arc GIS 9.3. ASTER DEM has been used to delineate the sub-watersheds. It has been found that the total number of streams is 814 and fifth order has been considered as highest order. The highest bifurcation ratio among all the sub-watersheds is 3.95 which indicates less structural controlled drainage and the Ahar watershed fall under normal basin category. The prioritization was carried out by assigning ranks to the individual indicator and the compound value was calculated. Watersheds with highest compound value were given low priority while lowest compound values were given high priority. The result shows that the sub-watersheds ASB3, ASB4 and ASB5 falls under high risk for soil erosion and need to give high priority for land conservation practice to conserve the land from further degradation.

 

Keywords : Morphometric analysis, Prioritization, Ahar watershed, Sub-watershed, Soil degradation

 

 

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