| Autor: |
Abebe, Tesfu, Gebremariam, Bogale |
| Zdroj: |
SN Applied Sciences; May 2019, Vol. 1 Issue: 5 p1-13, 13p |
| Abstrakt: |
Runoff and sediment yield modeling is important in the watershed to alleviate soil erosion and reservoir sedimentation. This paper presents runoff and sediment yield modeling of Kesem dam watershed, which has a drainage area of 2660 km2. Soil and Water Assessment Tool (SWAT, version 2009) integrated with ArcGIS software (version 9.3) was used to simulate the stream flow and sediment concentration of Kesem dam watershed situated in Awash River basin for the period from 1994 to 2010. The model was calibrated manually by adjusting sensitive parameters using observed data from 2001 to 2006, and validation was done using observed data from 2007 to 2010. The model performance was checked by statistical model performance evaluators such as the coefficient of determination (R2), Nash–Sutcliffe model efficiency and Percent bias and it shows that the model has a high potential in the estimation of runoff and sediment yield. The test of the model SWAT by simulating the streamflow and sediment concentration was satisfactory. From the generated spatial distribution of runoff and Sediment yield of the Kesem dam watershed, subbasins 12 and 13 were high runoff and sediment yielding sub-basins among the 41 sub-basins. The outputs of this study will be used by water resource managers and decision makers to conserve soil and water in the sub-watershed levels. |
| Databáze: |
Supplemental Index |
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