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http://dx.doi.org/10.3741/JKWRA.2014.47.6.561

Real-time Flood Stage Forecasting of Tributary Junctions in Namhan River  

Kim, Sang Ho (Department of Civil Engineering, Sangji University)
Hyun, Jin Sub (Department of Civil Engineering, Sangji University)
Kim, Ji-Sung (River and Coastal Research Division, Korea Institute of Construction Technology)
Jun, Kyung Soo (Graduate School of Water Resources, Sungkyunkwan University)
Publication Information
Journal of Korea Water Resources Association / v.47, no.6, 2014 , pp. 561-572 More about this Journal
Abstract
The backwater effect at a tributary junction increases the risk of flood damage such as inundation and levee overflow. In particular, the rapid increase in water level may cause injury to persons. The purpose of this research is the development of the real-time flood forecasting technique as a part of the non-structural flood damage reduction measures. To this end, the factors causing a water level rising at a junction were examined, and the empirical formula for predicting flood level at a junction was developed using the calculated discharge and water level data from the well-constructed hydraulic model. The water level predictions show that average absolute error is about 0.2~0.3m with the maximum error of 1.0m and peak time can be captured prior to 0~5 hr. From the results of this study, the real-time flood forecasting system of a tributary junction can be easily constructed, and this system is expected to be utilized for reduction of flood inundation damage.
Keywords
Namhan-River; Hydraulic Model; Junction; Backwater effect; Flood Forecasting;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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