2D-HEC-RAS Modeling of Flood Wave Propagation in a Semi-Arid Area Due to Dam Overtopping Failure

Ibtisam R. Karim, Zahraa F. Hassan, Hassan Hussein Abdullah, Imzahim A. Alwan

Abstract


Dam overtopping failure and the resulting floods are hazardous events that highly impact the inundated areas and are less predictable. The simulation of the dam breach failure and the flood wave propagation is necessary for assessing flood hazards to provide precautions. In the present study, a two-dimensional HEC-RAS model was used to simulate the flood wave resulting from the hypothetical failure of Al-Udhaim Dam on Al-Udhaim River, Iraq, and the propagation of the resulting dam-break wave along 100 km downstream the dam site for the overtopping scenario. The main objective is to analyze the propagation of the flood wave so that the failure risk on dam downstream areas can be assessed and emergency plans may be provided. The methodology consisted of two sub-models: the first is the dam breach failure model for deriving the breach hydrograph, and the second is the hydrodynamic model for propagating the flood wave downstream of the dam. The breach hydrograph is used as an upstream boundary condition to derive the flood impact in the downstream reach of Al- Udhaim River. The flood inundation maps were visualized in RAS-Mapper in terms of water surface elevation, water depth, flow velocity, and flood arrival time. The maximum recorded values were: 105 m (a.m.s.l.), 18 m, 5.5 m/s, and, respectively. The flow velocity decreased from upstream to downstream of the terrain, which means less risk of erosion in the far reaches downstream of the study area. The inundation maps indicated that the water depth and flow velocity were categorized as Catastrophic limits on the terrain's area. The results offer a way to predict flood extent and showed that the impact of a potential dam break at Al-Udhiam Dam will be serious, therefore, suitable management is needed to overcome this risk. Moreover, the maps produced by this study are useful for developing plans for sustainable flood management.

 

Doi: 10.28991/cej-2021-03091739

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Keywords


Breach Hydrograph; Overtopping; Hypothetical Failure; Al-Udhaim Dam; 2D HEC-RAS Model.

References


Froehlich, David C. “Peak Outflow from Breached Embankment Dam.” Journal of Water Resources Planning and Management 121, no. 1 (January 1995): 90–97. doi:10.1061/(ASCE)0733-9496(1995)121:1(90).

Army Corps of Engineers, HEC-RAS River Analysis System, User's Manual, Version 5.0.7, Hydrologic Engineering Center, (February 2016).

Quirogaa, V. Moya, S. Kurea, K. Udoa, and A. Manoa. “Application of 2D Numerical Simulation for the Analysis of the February 2014 Bolivian Amazonia Flood: Application of the New HEC-RAS Version 5.” Ribagua 3, no. 1 (January 2016): 25–33. doi:10.1016/j.riba.2015.12.001.

Joshi, Mrunal M., and Shahapure S.S. “Two Dimensional Dam Break Flow Study Using HEC-RAS for Ujjani Dam.” International Journal of Engineering and Technology 9, no. 4 (August 31, 2017): 2923–2928. doi:10.21817/ijet/2017/v9i4/170904032.

Kumar, Neeraj, Mukesh Kumar, Arpan Sherring, Shakti Suryavanshi, Ajaz Ahmad, and Deepak Lal. “Applicability of HEC-RAS 2D and GFMS for Flood Extent Mapping: a Case Study of Sangam Area, Prayagraj, India.” Modeling Earth Systems and Environment 6, no. 1 (November 20, 2019): 397–405. doi:10.1007/s40808-019-00687-8.

Sattar, Ashim, Ajanta Goswami, and Anil V. Kulkarni. “Hydrodynamic Moraine-Breach Modeling and Outburst Flood Routing - A Hazard Assessment of the South Lhonak Lake, Sikkim.” Science of The Total Environment 668 (June 2019): 362–378. doi:10.1016/j.scitotenv.2019.02.388.

Albu, Liviu-Marian, Andrei Enea, Marina Iosub, and Iuliana-Gabriela Breabăn. “Dam Breach Size Comparison for Flood Simulations. A HEC-RAS Based, GIS Approach for Drăcșani Lake, Sitna River, Romania.” Water 12, no. 4 (April 12, 2020): 1090. doi:10.3390/w12041090.

Pilotti, Marco, Luca Milanesi, Vito Bacchi, Massimo Tomirotti, and Andrea Maranzoni. “Dam-Break Wave Propagation in Alpine Valley with HEC-RAS 2D: Experimental Cancano Test Case.” Journal of Hydraulic Engineering 146, no. 6 (June 2020): 05020003. doi:10.1061/(asce)hy.1943-7900.0001779.

Říha, Jaromír, Stanislav Kotaška, and Lubomír Petrula. “Dam Break Modeling in a Cascade of Small Earthen Dams: Case Study of the Čižina River in the Czech Republic.” Water 12, no. 8 (August 17, 2020): 2309. doi:10.3390/w12082309.

Sarchani, Sofia, Konstantinos Seiradakis, Paulin Coulibaly, and Ioannis Tsanis. “Flood Inundation Mapping in an Ungauged Basin.” Water 12, no. 6 (May 27, 2020): 1532. doi:10.3390/w12061532.

Shahrim, M F, and F C Ros. “Dam Break Analysis of Temenggor Dam Using HEC-RAS.” IOP Conference Series: Earth and Environmental Science 479 (July 14, 2020): 012041. doi:10.1088/1755-1315/479/1/012041.

Psomiadis, Emmanouil, Lefteris Tomanis, Antonis Kavvadias, Konstantinos X. Soulis, Nikos Charizopoulos, and Spyros Michas. “Potential Dam Breach Analysis and Flood Wave Risk Assessment Using HEC-RAS and Remote Sensing Data: A Multicriteria Approach.” Water 13, no. 3 (January 31, 2021): 364. doi:10.3390/w13030364.

Government’s Strategy for Water and Land Resources in Iraq (SWRLI). (2014). Final Report.

MacDonald, Thomas C., and Jennifer Langridge‐Monopolis. “Breaching Charateristics of Dam Failures.” Journal of Hydraulic Engineering 110, no. 5 (May 1984): 567-586. doi:10.1061/(ASCE)0733-9429(1984)110:5(567).

Froehlich, David C. “Embankment Dam Breach Parameters and Their Uncertainties.” Journal of Hydraulic Engineering 134, no. 12 (December 2008): 1708–1721. doi:10.1061/(ASCE)0733-9429(2008)134:12(1708).

Von Thun, J. Lawrence, and David R. Gillette. "Guidance on breach parameters, unpublished internal document." US Bureau of Reclamation (1990): 17.

Xu, Y., and L. M. Zhang. “Breaching Parameters for Earth and Rockfill Dams.” Journal of Geotechnical and Geoenvironmental Engineering 135, no. 12 (December 2009): 1957–1970. doi:10.1061/(ASCE)gt.1943-5606.0000162.

Basheer, Talal A., Aimrun Wayayok, Badronnisa Yusuf, and Md Rowshon Kamal. "Dam Breach parameters and their influence on flood hydrographs for Mosul Dam." Journal of Engineering Science and Technology 12, no. 11 (2017): 2896-2908.

State Commission of Dams and Reservoir (SCDR), Hydrological study of the Al-Udhaim Dam, Iraq, (September 2019).

Bellos, Vasilis, Vasileios Kaisar Tsakiris, George Kopsiaftis, and George Tsakiris. “Propagating Dam Breach Parametric Uncertainty in a River Reach Using the HEC-RAS Software.” Hydrology 7, no. 4 (October 3, 2020): 72. doi:10.3390/hydrology7040072.

Brunner, G. W. “HEC-RAS River Analysis System 2D Modeling User’s Manual” (Vol. 5), (2016a), Davis, CA.

Gibson, S. “Unsteady HEC-RAS Model of the downtown reach of the Truckee River.” HEC, PR-58, 39, (2005).

Mihu-Pintilie, Alin, Cătălin Ioan Cîmpianu, Cristian Constantin Stoleriu, Martín Núñez Pérez, and Larisa Elena Paveluc. “Using High-Density LiDAR Data and 2D Streamflow Hydraulic Modeling to Improve Urban Flood Hazard Maps: A HEC-RAS Multi-Scenario Approach.” Water 11, no. 9 (September 3, 2019): 1832. doi:10.3390/w11091832.


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DOI: 10.28991/cej-2021-03091739

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