Local, national and regional water supplies needed for energy production, meet the irrigation demands, industrial and domestic usage have come under sever degradation hence decreased the piezo metric water table level in the groundwater resources which finally results in negative environmental impacts. Silver Creek basin (area 154.8 mile2 equals to approximately 400.930 km 2) locates in southern part of Illinois State, is connected to highland lake (which has a huge impact in the area and specifically Highland City) with east fork tributary. In this research watershed modeled in a hydrological model called SWAT (Soil and Water Assessment Tool) which is an extension of ArcGIS software, then watershed area is divided into 75 sub watersheds. Different parameters and variables are considered for sensitivity analysis in order to figuring out the most sensitive parameters and their ranges for flow rate calibration within different hydrological response units (HRUs). The flow rate quantified at sub basin level with daily time intervals. The model inputs are precipitations and meteorological data such as Solar Radiation, Wind speed and direction, Temperature and Relative Humidity, then model was calibrated with two sets of real data for Troy and Freeburg Stations in the middle and pouring point of watershed respectively. The main object was to test the performance of SWAT and the feasibility of using this model as a simulator of flow rate at a watershed scale. Model calibration and uncertainty analysis performed with SUFI-2 (sequential Uncertainty Fitting) which is interfaced with SWAT applying iSWAT generic program.
|Commitee:||Grinter, Mark, Zhou, Jianpeng Jim|
|School:||Southern Illinois University at Edwardsville|
|School Location:||United States -- Illinois|
|Source:||MAI 58/01M(E), Masters Abstracts International|
|Subjects:||Civil engineering, Environmental engineering|
|Keywords:||ArcSWAT, Flowrate calibration, SWAT-cup, SWAT-output viewer|
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