1997•Journal of the Korean Society of Civil EngineersRequires access
An Application of HEC-1 to a Large Watershed
Joong Hoon Kim, Hwandon Jun, Yong-Nam Yoon, Jae-Soo Lee
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Abstract
The objective of this study is to examine the applicability of HEC-1. a flood-runoff simulation model. to simulate a large watershed. To examine the applicability of HEC-1 to a large watershed, the data which were observed in the Han river basin in the 1984 and 1990 flood events are collected first. then the basin runoff characteristic parameters for HEC-1 are calibrated. Using the basin runoff parameters. a flood runoff hydrograph is calculated by HEC-1 to be compared with the observed hydrograph at the Indogyo station. The comparison shows that the simulated hydrograph is agreed well with the observed hydrograph and it confirms that HEC-1 can be successfully applied to a large watershed simulation. Finally, 100 and 200-year frequency flood hydrographs are estimated using the calibrated runoff parameters.