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Runoff Analysis Using Rainfall-Runoff Model During Flood Season at Daecheong Dam Upstream

  • Crisisonomy
  • Abbr : KRCEM
  • 2015, 11(2), pp.261-273
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

김형산 1,  Maeng, Seung-jin 1,  장우석 1,  손주영 1,  Hwang, Man Ha 2

1충북대학교
2한국수자원공사 수자원연구원

Accredited

ABSTRACT

In this study HEC-HMS rainfall-runoff Model was used for flood season discharge analysis at Sutong watershed located at upstream of Daecheong dam. Initial parameters were computed by using empirical formula commonly applied at domestic level. The runoff Curve Number(CN) estimated to be 88 according to AMC-III. Rating curve was estimated on the basis of measured discharge of major rainfall events from 2012 to 2014 for the calibration and validation of the model. Calibration was performed using the estimated rating curve for major rainfall event of 2014 and verification was performed for major rainfall events of 2012 and 2013. The quantitative comparison between observed and simulated runoff through the calibration and verification showed a good result of relative error within 5%. Applying the parameters calibrated in this study, future flood season runoff analysis at Daecheong dam upstream is believed to be able to simulate a more reliable flood runoff.

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