Watershed modeling and calibration for Spring Creek Sub-basin in the Flint River Basin of Georgia Using the EPA BASINS/HSPF modeling tool
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Heavy groundwater pumping in the Lower Flint River Basin, especially in Spring Creek Basin for agriculture irrigation plus surface water withdrawal has led to the record low flow conditions in recent drought years during summer. To evaluate possible effects of human activities on stream flow and analyzing future impact of these practices on flow conditions, a hydrological model to simulate the stream flow in Spring Creek has been developed by utilizing EPA BASINS/HSPF watershed modeling tool. The model was calibrated by using observed gage flow during a period of 1982 to 1995. In this paper, the process of data collection, model development and calibration is discussed. The simulation of flow in Spring Creek shows a good match between simulated flow and observed flow. The goal of this research is to provide an accurate modeling tool to simulate stream flow in Spring Creek, and therefore to provide technical support for management decision.