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Floodplain Inundation Modeling and Mapping for Geray River: Nile Basin, Ethiopia

Eliyas Bezabeh Tegegnie, Fitsum Tesfaye Berhe

Abstract


Flood is among the most devastating natural hazards in the world claiming lives and properties more than any other natural phenomena. During high flow, the Geray River flooded the vicinity of the area and causes loss of cultivated land and life. The objective of this study describes the flood extent and depth in the Geray River for different flow conditions. This research involves the integration of HEC-HMS, HEC-RAS, and GIS to develop a regional model for floodplain determination and modeling analysis representation. The hydrologic model is calibrated using of HEC-HMS for daily time series data for return periods of 2, 10, 25, 50 and 100 years. One dimensional hydraulic model HEC-RAS with HEC-GeoRAS interface in coordination with ArcGIS was applied for the analysis. The result of the hydrologic model by HEC-HMS showed a flow value of 109.1m3/sec, 214.9m3/sec, 274.4m3/sec, 318.4m3/sec and 362.7m3/sec for return periods of 2, 10, 25, 50 and 100 respectively. Accordingly, the flooded area generated, for the mentioned return periods are 0.87km2, 1.08km2, 1.16km2, 1.23km2 and 1.29km2 respectively. The classification of flood depth area showed most of the flooding area had water depth less than 1.5m.

Keywords


Floodplain; Inundation; Model; Mapping; Flood Depth

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References


Abaje, I. (2009). Mapping Flood Vulnerable Areas in a Developing Urban Center of Nigeria. Young, The Technical Writer’s Handbook. Mill Valley, CA: University Science, 1989.

Ackerman, c. T. (2009). HEC-GeoRAS, GIS Tools for Support of HEC-RAS using ArcGIS. Washington DC.: US Army Corps of Engineers, Institute for Water Resource (HEC).

Alemu, W. G. (2007). Flood Hazard and Risk Assessment in Fogera Woreda using GIS & Remote Sensing.

Ali El-Naqa and Mohammad Jaber. (2018). Floodplain Analysis using ArcGIS, HEC-GeoRAS and HEC-RAS in Attarat Um Al-Ghudran Oil Shale Concession Area, Jordan

Aris, M. (2003). GIS modeling of River and Tidal Flood Hazards in a Waterfront City: a Case study of Semarang city, Central Java, Indonesia.K. Elissa, “Title of paper if known,” unpublished.

Awlachew, S. (2000). Investigation of water Resources Aimed at Multi-Objective Development with Respect to Limited Data Situation: The Case of Abaya-Chamo Basin.

Checko, T. (2014). Characteristics, classification and agricultural potential of soils of upper Yezat Micro Watershed, North-Western Highlands of Ethiopia.

Chow, V. T. (1988). Applied Hydrology. Singapore: McGraw Hill Book Company.

David Ford, N. P. (2008). Hydrologic Modeling System HEC-HMS. Washington DC: US Army corps of Engineers, Hydrologic Engineering Center.

Dean Djokic, Zichuan Ye, Christine Dartiguenave (2011). Arc Hydro Tools Overview, Version 2.0

Gary, B. W. (2016). HEC-RAS River Analysis System Hydraulic Reference Manual. Washington DC: US Army Corps of Engineers, Hydrologic Engineering Center.

Getahun YS, G. S. (2015). Flood Hazard Assessment and Mapping of Flood Inundation Area of the Awash River Basin in Ethiopia using GIS and HEC-GeoRAS/HEC-RAS.

Hargreaves, G., & Samani, Z. (1985). Reference Crop Evapotranspiration from Temperature Applied Engineering 1. 96-99.

Jayaseelan, A. (2006). Drought and Floods Assessment and Monitoring using Remote Sensing and GIS.

Jeonghwan Ahn, Woncheol Cho, Taereem Kim, Hongjoon Shin and Jun-Haeng Heo (2014). Flood Frequency Analysis for the Annual Peak Flows Simulated by an Event-Based Rainfall-Runoff Model in an Urban Drainage Basin. School of Civil & Environmental Engineering, College of Engineering, Yonsei University

Lemlem Tadesse Hishe, (2016.) Assessing the Impact of Watershed Development Programs on Soil Erosion and Biomass Production Using Remote Sensing and GIS: The Case of Yezat Watershed, West Gojjam Zone of Amhara Region, Ethiopia

Linsley, R. a. (1983). PAULHUS, Hydrology for Engineers, McGraw-Hill Homogeneity inconsistency. Washington D.C.

Monteith, J. L. (1965). Evaporation and Environment. - Symp.

Muna Benedict, (2014). Hydrological Analysis of Sagana River (4A) Catchment, Nairobi, Kenya.

Neitsch, S. e. (2005). Soil & Water Assessment Tool Theoretical Documentation User's Manual. Texas: Texas Water Resources Institute.

Ramesh S.V. Teegavarapu, V. Chandramouli, (2005). Improved weighting methods, deterministic and stochastic data-driven models for estimation of missing precipitation records

Roger, M., Kohl, B., H. Pirkl, Viglione, A., Komma, J., Kirnbauer, R., et al. (2012). Runoff models and flood frequency statistics for design flood estimation in Austria. 456–457.

Sanyal, J., & Lu, X. (2005). Remote sensing and GIS-based flood vulnerability assessment of human settlement: A case study of Gygantic west Bengal, India. Hydro process.

Seleshi, Y., & Zanke, U. (2004). Recent changes in rainfall and rainy days in Ethiopia.

Shaw, E. (1988). Hydrology in Practice. Wokingham: Van Nostrand Reinhold International.

Sing N. Ghosh, (1997). Flood Control and Drainage Engineering: Second Edition

Stedinger, J., & Griffis, V. (2012). Flood frequency analysis in the United States: Time to update. 199–204.

Ujas Pandya, D. P. (2017). River Cross Section Delineation from the Google Earth for Development of 1D HEC-RAS Model - A Case of Sabarmati River, Gujarat, India.

Zelalem Abera (2011). Flood Mapping and Modeling on Fogera Flood Plain: A Case Study of Ribb River. Master of Science Thesis, Addis Ababa University, Ethiopia.




DOI: https://doi.org/10.3759/jowrem.v6i3.3057

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