Estimation of Runoff for JAMNAGAR District using SCS-CN Method and Geographic Information Systems |
Author(s): |
| Manthan K. Shah , L.D.C.E. Ahmedabad; Vishvam H. Pancholi; Prof. Ashok T. Motiani, L.D.C.E. Ahmedabad; Dr. Indraprakash, L.D.C.E. Ahmedabad, Bisag Gandhinagar |
Keywords: |
| SCS-CN, GIS, SCS |
Abstract |
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An accurate understanding of the hydrological behavior of a Jamnagar district is important for effective assessment of flood. Runoff is the most basic and important data needed when planning water control strategies/ practices, such as, waterways or storage facilities. The most popular method used for runoff estimation is SCS runoff curve number method. In india availability of accurate information on runoff is scarce. Geographic Information System (GIS) techniques can be effectively used for spatial as well as non-spatial data base that represent the various hydrologic characteristics of the watershed. The Present paper deals with the study area of Jamnagar district, located between 22o 00’ and 22o 32’ of North Latitude and 69 57’ and 70 05’ of East Longitude, in Gujarat State.India. The Daily rainfall data of 10 Rainguage stations(1991-2010) was collected and used to predict the daily Runoff using Soil Conservation Service-Curve number(SCS-CN) and GIS. For study about 1991-2010, minimum and maximum of(a) Yearly Average rainfall are 196.87 mm and 1020.18 mm respectively and (b) Yearly Average runoff are 8.02 mm and 353.23mm respectively. Developed rainfall-runoff model has been used to understand the characteristics of the runoff |
Other Details |
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Paper ID: IJSRDV3I30436 Published in: Volume : 3, Issue : 3 Publication Date: 01/06/2015 Page(s): 777-780 |
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