TITLE:
Simulation of Runoff and Sediment Yield for a Kaneri Watershed Using SWAT Model
AUTHORS:
Vidula A. Swami, Sushama S. Kulkarni
KEYWORDS:
Arc SWAT, Calibration, Validation, GIS, Runoff, Sediment Yield, Coefficient of Determination R2
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.1,
December
25,
2015
ABSTRACT: Watershed
as an entry point acts as a beginning to address the issues of sustainable rainwater
management for improving livelihoods. Extraction of watershed parameters using
Geographical Information System (GIS) and use of simulation models is the
current trend for hydrologic evaluation of watersheds. In the present study,
the open Source Tool Quantum GIS 2.2.0 was used for preparation of maps to
verify the spatial extent of the area. The Soil and Water Assessment Tool
(SWAT) having an interface with Arc-View GIS software (ArcGIS 10.1
with Arc SWAT 2012 extension) was selected for the estimation of runoff and
sediment yield from Kaneri watershed, located in Western Maharashtra region.
The coefficient of determination (R2) for the monthly and yearly
runoff was obtained as 0.849 and 0.951 respectively for the calibration period
1979 to 2000 and 0.801 and 0.950 respectively for the validation period
2001-2013. The R2 value in estimating the monthly and yearly
sediment yield during calibration period was computed as 0.722 and 0.788
respectively. The R2 for monthly and yearly sediment yield values
for validation period was observed to be 0.565 and 0.684 respectively.