Prospect of Discharge at Daecheong and Yongdam Dam Watershed under Future Greenhouse Gas Scenarios using SWAT Model

  • Seonhui Noh Chungnam National University
  • Mikyoung Choi Chungnam National University
  • Kwansue Jung Chungnam National University
  • Jinhyeog Park K-water Institute of Water and Environment, Korea

Abstract

In this study, the future expected discharges is analyzed at Daecheong and Yongdam Dam Watershed under Future Greenhouse Gas Scenarios based on RCM with 1 km spatial resolutions from Korea Meteorological Agency(KMA). HadGEM2-AO, which is the climate change prediction model that KMA recently introduced is used for this study. Geum river watershed area is 9,914.013 km2 and there are two dams, one of dam is Daecheong Dam completed in 1980, the other dam is Yongdam Dam completed in 2001. The runoff is simulated using the ArcSWAT model from 1988 to 2010. The simulation is in good agreement with measured data at the Yongdam Dam and Daecheong Dam showing R2 of 92.25% and 95.40% respectively. Using the average discharge from 2001 to 2010 as a baseline, the simulated annual average discharge increased by approximately 47.76% and 36.52% under the RCP4.5 scenario and RCP8.5 scenario respectively for the from 2011 to 2100.

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Author Biographies

Seonhui Noh

Department of Civil Engineering, Chungnam National University, Daejeon, South Korea

Mikyoung Choi

International Water Resources Research Institute, Chungnam National University, Daejeon, South Korea

Kwansue Jung

Department of Civil Engineering, Chungnam National University, Daejeon, South Korea

Jinhyeog Park

K-water Institute of Water and Environment, K-water, Daejon, South Korea

Published In
Vol 23 No 6, Nov 30, 2019
How to Cite
[1]
S. Noh, M. Choi, K. Jung, and J. Park, “Prospect of Discharge at Daecheong and Yongdam Dam Watershed under Future Greenhouse Gas Scenarios using SWAT Model”, Eng. J., vol. 23, no. 6, pp. 469-476, Nov. 2019.