World Environmental and Water Resources Congress 2018
Application of KINEROS2 for Simulating Surface Runoff and Sediment Yield in Desert Watershed
Publication: World Environmental and Water Resources Congress 2018: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
ABSTRACT
KINEROS2 model was applied to simulate watershed erosion in Barry M. Golden Range (BMGR)—West in Yuma, Arizona. The range is approximately 1000-square-mile, and land cover is primarily shrub/scrub and barren land. It consists of three major watersheds: Yuma Desert Wash, Coyote Wash, and Mohawk Wash. If using the default parameters in KINEROS2, none of the simulated erosion depth in the sub-basins matched the observations. The average simulated erosion depth are two orders of magnitude smaller than the observations. Therefore, a stepwise secant method was used to calibrate the key modeling parameters including saturated hydraulic conductivity, Manning’s roughness, mean capillary drive, rainsplash coefficient, and cohesion coefficient. The calibrated results yielded only 11%, 30%, and 36% sub-basins matched the observations satisfactorily in Yuma Desert Wash, Coyote Wash, and Mohawk Wash, respectively. Results in the majority of sub-basins were still smaller than the observations even though the parameters that could yield the maximum erosion were used. This indicates the limited capability of KINEROS2 in simulating watersheds in arid and semi-arid region.
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ACKNOWLEDGEMENT
The authors are grateful to financial support provided by the Marine Corps Air Station at Yuma, Arizona.
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Published In
World Environmental and Water Resources Congress 2018: Watershed Management, Irrigation and Drainage, and Water Resources Planning and Management
Pages: 489 - 497
Editor: Sri Kamojjala, Las Vegas Valley Water District
ISBN (Online): 978-0-7844-8140-0
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: May 31, 2018
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