Flood risk estimation with scenario-based, coupled river-overland hydrodynamic modeling
Jae Young Leea,* Myeong Jun Nama Hyun Han Kwonb Ki Young Kimc
aInfra Research Institute, Incity bDept. of Civil Engineering, Chonbuk National University cInfrastructure Research Center, K-water Institute
A coupled river-overland hydrodynamic model was applied to estimate flood risk by a scenario-based approach. The study area is Seongseo Industrial Complex in Daegu which is located near Nakdong river and Geumho river. Inundation depth and velocity at each time were calculated by applying a coupled 1D/2D hydrodynamic model to the target area of interest. The 2D inundation analysis for river and overland domain was performed with the scenario-based approach that there are levee overflow against 100/200 year high quantile (97.5%) design flood and levee break against 100/200 year normal quantile (50%) design flood. The level of flood risk was displayed for resident/industrial area using information about maximum depth and velocity of each node computed from the 2D inundation map. The research outcome would be very useful in establishing specified emergency action plans (EAP) in case of levee break and overflowing resulting from a flood.
1. Ahmandian, R., Falconer, R.A., and Wicks, J. (2015). “Benchmarking of flood inundation extent using various dynamically linked 1D-2D approaches.” Journal of Flood Risk Management, ISSN 1753-318X 10.1111/jfr3. 12208.
2. Choi, K.H., and Han, K.H. (2005). “Development of 2-D flood inundation model for dam failure analysis: I. Theory and Model Verification.” Journal of the Korean Society of Civil Engineers, Vol. 25, No. 2B, pp. 135-142.
3. Choi, K.H., and Han, K.H. (2005). “Development of 2-D flood inundation model for dam failure analysis: II. Applications.” Journal of the Korean Society of Civil Engineers, Vol. 25, No. 2B, pp. 143-149.
4. Di Baldassarre, G., Castellarin, A., and Brath, A. (2009). “Analysis of the effects of levee heightening on flood propagation: example of the River Po.” Italy, Hydrological Sciences Journal, Vol. 54, No. 6, pp. 1007-1017.
5. Fang, X., and Su, D. (2006). “An integrated one-dimensional and two-dimensional urban stormwater flood simulation model.” JAWRA, Vol. 42, pp. 713-724.
6. Hergarten, P.S.G., and Neugebauer, H.J. (1995). “An integrated model for the surface runoff and the infiltration of water.” EOS, transc. Am. Geophys. Union. Vol. 76, No. 46, F320.
7. Jang, S.H., Yoon, J.Y., Yoon, Y.N., and Kim, W.S. (2006). “Method for flood runoff analysis of main channnel connected with interior floodplain: I. Application for Analysis of Inundation Area in Interior Floodplain.” Journal of the Korean Society of Civil Engineers, Vol. 26, No. 1, pp. 79-88.
8. Kwon, H.H., Kim, J.G., and Park, S.H. (2013). “Derivation of flood frequency curve with uncertainty of rainfall and rainfall- runoff model.” Journal of Korean Water Resources Association, KWRA, Vol. 46, No. 1, pp. 59-71.
9. Kwon, H.H., Kim, J.G., Lee, J.S., and Na, B.K. (2012). “Uncertainty assessment of single event rainfall-runoff model using bayesian model.” Journal of Korean Water Resources Association, KWRA, Vol. 45, No. 5, pp. 505-516.
10. Lee, G.H., Lee, S.S., and Jung, K.S. (2010). “Development of a raster-based two-dimensional flood inundation model.” KOSHAM, J. Korean Soc. Hazard Mitig., Vol. 10, No. 6, pp. 155-163.
11. Lee, J.T., and Han, K.H. (1989). “A forecasting model for the flooded area fesulting from breached levee.” Journal of Korean Association of Hydrological Sciences, Vol. 22, No. 2, pp. 223-231.
12. Lee, J.T., Hur, S.C., Kim, J.H., and Han, K. H. (2006). “Characteristics of the inundation and process of making a flood map according to the levee break conditions in urban stream - jungrang experimental basin.” Journal of Korean Water Resources Association, KWRA, Vol. 39, No. 5, pp. 383-394.
13. Ministry of Land, Infrastructure and Transport (2011). “Improvement and supplement of probability rainfall in South Korea”.
14. Ministry of Land, Infrastructure and Transport (2013). “Nakdong-gang river master plan.” Busan regional construction management administration.
15. Ministry of Land, Infrastructure, Transport and Tourism (2015). “Summary of flood hazard map manual.” Japan.
16. Park, J.H. (2012). “Development of technique to estimate inundation hazard level caused by river levee failure.” KOSHAM, J. Korean Soc. Hazard Mitig., Vol. 12, No. 6, pp. 287-296.
17. Park, S.J., Choi, H.G., Huh, Y.H., and Han, K. Y. (2011). “Establishment and application of 2-Dimensional flood inundation analysis system by the collaboration of river and lowland in nam river basin.” KOSHAM, J. Korean Soc. Hazard Mitig., Vol. 11, No. 6, pp. 237-247.
18. Reis, D.S., and Stedinger, J.R. (2005). “Bayesian MCMC flood frequency analysis with historical information.” Journal of Hydrology, 313, pp. 97-116.
19. Scott, S., and Lall, U. (2015). “A hierarchical bayesian regional model for nonstationary precipitation extremes in Northern California conditioned on tropical moisture exports.” Water Resources Research, Vol. 51, No. 3, pp. 1472-1492.
20. U.S. Department of the Interior-Bureau of Reclamation (1988). “Downstream Hazard Classification Guidelines.”
21. Yeh, G.T., Huang G.B., Zhang, F., Cheng, H.P., and Lin, H.C. (2005). “WASH123D: A numerical model of flow, thermal transport, and salinity, sediment, and water quality transport in WAterSHed systems of 1-D stream-river network, 2-D overland regime, and 3-D subsurface media.” Technical report Submitted to US. EPA, Department of Civil and Environmental Engineering, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL.
22. Zhai, P.X., Zhang, X., Wan, H., and Pan, X. (2005). “Trends in total precipitation and frequency of daily precipitation extremes over China.” J. Climate, Vol. 18, pp. 1096-1108.