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http://dx.doi.org/10.3741/JKWRA.2015.48.6.479

Development of Concentration Time and Storage Coefficient Considering Regional Trend in Urban Stream Watershed  

Bae, Deg-Hyo (Dept. of Civil and Environmental Engrg., Sejong Univ.)
Kim, Yong-Jae (Dept. of Civil and Environmental Engrg., Sejong Univ.)
Publication Information
Journal of Korea Water Resources Association / v.48, no.6, 2015 , pp. 479-489 More about this Journal
Abstract
The objective of this study is to develop the equations for concentration time and storage coefficient considering regional trend in urban stream watershed for reliable hydrological analysis. The 13 basins located in Jungrang, Tan, Anyang, and Hongje stream are selected for the data collection and formula development in this study. The stepwise multiple-regression analysis is used for the development considering watershed, urban, and precipitation characteristic indices. The developed formulae are compared with the domestic and foreign empirical formulae and evaluated the accuracy in urban stream area. It shows the computed value from the equation developed in this study is more accurate than those from other empirical formulae. The error sum, average error and RMSE of computed values from the developed equations in this study are the lowest. The formulae considering the regional trend of urban stream watershed are worth in terms of showing better results than the domestic and foreign empirical formulae. It can be concluded the developed formulae can be useful in urban stream watershed.
Keywords
concentration time; storage coefficient; urban stream watershed; regional trend;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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