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http://dx.doi.org/10.15681/KSWE.2016.32.6.570

Operational Water Quality Forecast for the Nakdong River Basin Using HSPF Watershed Model  

Shin, Chang Min (Water Quality Assessment Research Division, National Institute of Environment Research)
Kim, Kyunghyun (Water Quality Assessment Research Division, National Institute of Environment Research)
Publication Information
Journal of Korean Society on Water Environment / v.32, no.6, 2016 , pp. 570-581 More about this Journal
Abstract
A watershed model was constructed using the Hydrological Simulation Program Fortran to predict the water quality, especially chlorophyll-a concentraion, at major tributaries of the Nakdong River basin, Korea. The BOD export loads for each land use in HSPF model were estimated at $1.47{\sim}8.64kg/km^2/day$; these values were similar to the domestic monitoring export loads. The T-N and T-P export loads were estimated at $0.618{\sim}3.942kg/km^2/day$ and $0.047{\sim}0.246kg/km^2/day$, slightly less than the domestic monitoring data but within the range of foreign literature values. The model was calibrated at major tributaries for a three-year period (2008 to 2010). The deviation values ranged from -31.5~1.6% of chlorophyll-a, -24.0~2.2% of T-N, and -5.7~34.8% of T-P. The root mean square error (RMSE) ranged from 4.3~44.4 ug/L for chlorophyll-a, -0.6~1.5 mg/L for T-N, and 0.04~0.18 mg/L for T-P, which indicates good calibration results. The operational water quality forecasting results for chlorophyll-a presented in this study were in good agreement with measured data and had an accuracy similar with model calibration results.
Keywords
Chlorophyll-a; Forecast; HSPF; Nakdong River;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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