Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Development of Agricultural Water Circulation Rate Considering Agricultural Reservoir and Irrigation District

농업용 저수지 및 관개지구를 고려한 농업유역 물순환율 개발

  • Kim, Seokhyeon (Department of Rural Systems Engineering, Seoul national University) ;
  • Song, Jung-Hun (Department of Agricultural and Biological Engineering & Tropical Research and Education Center, University of Florida) ;
  • Hwang, Soonho (Research Institute of Agriculture and Life sciences, College of Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Hak-Gwan (Graduate School of International Agricultural Technology, Institutes of Green Bio Science and Technology, Seoul national University) ;
  • Kang, Moon Seong (Department of Rural Systems Engineering, Research Institute of Agriculture and Life sciences, Institute of Green Bio Science and Technology, Seoul national University)
  • Received : 2020.02.13
  • Accepted : 2020.03.20
  • Published : 2020.03.31
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Abstract

The water circulation in agricultural watersheds changes with the operation of agricultural reservoirs, it is necessary to classify and evaluate them into upstream, agricultural reservoirs, irrigation districts, and downstream. Therefore, in this study, we developed the agricultural water circulation rate (AWCR) considering an agricultural reservoir and irrigation district by improving the water circulation rate of the Water environmental conservation Act. we applied it to Jinwi watershed using the module-based hydrologic analysis system to simulate the water circulation for agricultural reservoirs and irrigation areas. The model performance during the validation period was NSE of 0.762 for the downstream stream and 0.682 for the reservoir level. And the hydrograph separation model was applied to separate the direct and baseflow. As a result of this study, The AWCR of Jinwi watershed was 71.8% on average, which was higher than the water circulation rate estimated by the downstream hydrograph separation.

Keywords

References

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