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Hydrologic Calibration of HSPF Model using Parameter Estimation (PEST) Program at Imha Watershed  

Jeon, Ji-Hong (Department of Environmental Engineering, Andong National University)
Kim, Tae-Il (Department of Environmental Engineering, Andong National University)
Choi, Donghyuk (Department of Environmental Engineering, Andong National University)
Lim, Kyung-Jae (Department of Regional Infrastructure Engineering, Kangwon National university)
Kim, Tae-Dong (Department of Environmental Engineering, Andong National University)
Publication Information
Journal of Korean Society on Water Environment / v.26, no.5, 2010 , pp. 802-809 More about this Journal
Abstract
An automatic calibration tool of Hydrological Simulation Program-Fortran (HSPF), Parameter Estimation (PEST) program, was applied at the Imha lake watershed to get optimal hydrological parameters of HSPF. Calibration of HSPF parameters was performed during 2004 ~ 2008 by PEST and validation was carried out to examine the model's ability by using another data set of 1999 ~ 2003. The calibrated HSPF parameters had tendencies to minimize water loss to soil layer by infiltration and deep percolation and to atmosphere by evapotranspiration and maximize runoff rate. The results of calibration indicated that the PEST program could calibrate the hydrological parameters of HSPF with showing 0.83 and 0.97 Nash-Sutcliffe coefficient (NS) for daily and monthly stream flow and -3% of relative error for yearly stream flow. The validation results also represented high model efficiency with showing 0.88 and 0.95, -10% relative error for daily, monthly, and yearly stream flow. These statistical values of daily, monthly, and yearly stream flow for calibration and validation show a 'very good' agreement between observed and simulated values. Overall, the PEST program was useful for automatic calibration of HSPF, and reduced numerous time and effort for model calibration, and improved model setup.
Keywords
Automatic calibration; Hydrological simulation; Hydrological Simulation Program-Fortran (HSPF); Imha watershed; Optimization; Parameter Estimation (PEST);
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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