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http://dx.doi.org/10.3741/JKWRA.2013.46.5.547

Estimation of Synthetic Unit Hydrograph Using Geospatial Shape Factors and Nash Model in Mid-size Watershed  

Kim, Jin Gyeom (Dept. of Civil and Environmental Engineering, Dankook Univ.)
Kim, Jong Min (Dept. of Civil and Environmental Engineering, Dankook Univ.)
Kang, Boo Sik (Dept. of Civil and Environmental Engineering, Dankook Univ.)
Publication Information
Journal of Korea Water Resources Association / v.46, no.5, 2013 , pp. 547-558 More about this Journal
Abstract
Improved methodology of Synthetic Unit Hydrograph (SUH) utilized generally in hydrologic design work was suggested. In this study, regression analysis between peak hydrological data and geospatial data was applied to estimate specific peak flow and peak time for determining shape of SUH. Regression formulas for specific peak flow with respect to shape factors show higher coefficient of determination (0.73~0.81) than the ones with geospatial components only (0.52~0.69). The areal limitation of unit hydrograph application is regarded as 500~700 $km^2$. The validation through rainfall-runoff simulation shows encouraging results that relative error is 1.7~29.0%(Avg. 11.6%) for the case of using SUH developed in this study and 35.0~ 64.9% (Avg. 46.7%) for the SUH in the previous study except for the extraordinary cases.
Keywords
synthetic unit hydrograph; nash model; representative unit hydrograph; shape factor;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Choi, Y.J. (2010). Development of Synthetic Unit Hydrograph Considering Geomorphological Dispersion. Ph. D. dissertation, Chungbuk University, Cheongju, Korea, pp. 47-54 (in Korean).
2 Clark, C.O. (1945). "Storage and the unit hydrograph." Trans. ASCE, Vol. 110, pp. 196-223.
3 Dooge, J.C.I. (1959). "A general theory of the unit hydrograph." J. Geophys. Res., Vol. 64, pp. 241-256.   DOI
4 Jung, J.Y. (2007). Continuous Streamflow Simulation Using BaseflowSeparation and Nash's Instantaneous Unit Hydrograph. Master dissertation, Dankook University, Cheonan, Korea, pp. 3-16 (in Korean).
5 KICT (1993). Study on Development ofWater Resources Management Scheme. Ministry of Land, Transport and Maritime Affairs, pp. 711-717.
6 KICT (2000). Operation and Research on the Hydrological Characteristics of the Selma-Cheon Experimental Catchment-Development of Synthetic Unit Hydrograph, Korea Institute of Construction Technology. pp. 235-236 (in Korean).
7 Kim, D.M. (2003). A Study on Runoff based on Geomorphologic IUH in the Nam River Dan Basin. Master dissertation, Gyeongsang National University, Jinju, Korea, pp. 17-27 (in Korean).
8 Kim, J.C., Jung, K.S., and Kim, J.H. (2003). "The Estimation of Representative IUH Considering Geomorphological Factors." Journal of Korea Water Resources Association, KWRA, Vol. 36, No. 1, pp. 23-32(in Korean).   과학기술학회마을   DOI   ScienceOn
9 MLTM (2009). Integrated Flood Management in Han River Basin, Ministry of Land, Transport and Maritime Affairs, pp. 8.8-8.11 (in Korean).
10 Nash, J.E. (1957). "The form of the instantaneous unit hydrograph." IASH General Assembly of Toronto, Vol. 45, pp. 114-121.
11 NRCC (1989). Hydrology of Floods in Canada : A Guide to Planning and Design, Editor W.E. Watt., pp. 149.
12 Singh, V.P. (1988). Hydrologic System Rainfall runoff Modeling, Vol. I. Prentice-Hall, pp. 22-27.
13 Viessman, W., Jr., and Lewis, G.L. (1995) Introduction to Hydrology, 4th Ed., Prentice-Hall, New Jersey.
14 Yoon, J.I. (1994). A Comparative Study on Nash Model and Tank Model. Master dissertation, Konkuk University, Seoul, Korea, pp. 5-23 (in Korean).