Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Streamflow Modeling in Data-scarce Estuary Reservoir Watershed Using HSPF

HSPF 모형과 호소 물수지를 이용한 미계측 간척 담수화호 수문모델링

  • Seong, Choung Hyun (Department of Biological Systems Engineering, Virginia Polytechnic Institute and State University)
  • Received : 2014.11.12
  • Accepted : 2014.11.17
  • Published : 2014.11.30
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Abstract

This research presents an streamflow modeling approach in a data-scarce estuary reservoir watershed which has been suffered from high salinity irrigation water problem after completion of land reclamation project in South Korea. Since limited hydrology data was available on the Iwon estuary reservoir watershed, water balance relation of the reservoir was used to estimate runoff from upstream of the reservoir. Water balance components in the reservoir consists precipitation, inflow from upstream, discharge through sluice, and evaporation. Estimated daily inflow data, which is stream discharge from upstream, shows a good consistency with the observed water level data in the reservoir in terms of EI (0.93) and $R^2$ (0.94), and were used as observed flow data for the streamflow modeling. HSPF (Hydrological Simulation Program - Fortran) was used to simulate hydrologic response of upstream of the reservoir. The model was calibrated and validated for the periods of 2006 to 2007 and 2008 to 2009, respectively, showing that values of EI and $R^2$ were 0.89 and 0.91 for calibration period, 0.71 and 0.84 for validation period.

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References

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  1. Assessing Temporal and Spatial Salinity Variations in Estuary Reservoir Using EFDC vol.56, pp.6, 2014, https://doi.org/10.5389/KSAE.2014.56.6.139