alexa Extreme Weather and Flood Forecasting and Modelling for Eastern Tana Sub Basin, Upper Blue Nile Basin, Ethiopia | OMICS International| Abstract
ISSN: 2157-7587

Hydrology: Current Research
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  • Research Article   
  • Hydrol Current Res 2016, Vol 7(3): 257
  • DOI: 10.4172/2157-7587.1000257

Extreme Weather and Flood Forecasting and Modelling for Eastern Tana Sub Basin, Upper Blue Nile Basin, Ethiopia

Ayenew Desalegn1*, Solomon Demissie2 and Seifu Admassu2
1Department of Meteorology and Hydrology, Institute of Technology, Arba Minch University, Arba Minch, Ethiopia
2School of Civil and Water Resources Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Bahir Dar, Ethiopia
*Corresponding Author : Ayenew Desalegn, Department of Meteorology and Hydrology, Institute of Technology, Arba Minch University, Arba Minch, Ethiopia, Tel: +251910721861, Email: [email protected]

Received Date: Aug 13, 2016 / Accepted Date: Aug 31, 2016 / Published Date: Sep 07, 2016

Abstract

River flood is a natural disaster that occurs each year in the Fogera floodplain causing enormous damage to the human life and property. Overflow of Ribb and Gummara rivers and backwater effects from Lake Tana has affected and displaced thousands of people since 2006. Heavy rainfall for a number of days in the upper stream part of the catchment caused the river to spill and to inundate the floodplain. Three models were used for this research; the numerical weather prediction model (WRF), physical based semi distributed hydrological model SWAT and the LISFLOOD-FP 1D/2D flood inundation hydrodynamic model to forecast the extreme weather, flood and flood modeling. Daily rainfall, maximum and minimum temperature for the forecasted period ranges from 0 to 95.8 mm, 18°C to 28°C and 9°C to 18°C, respectively. The maximum forecasted flow at Ribb and Gummara Rivers have 141 m3/s and 185 m3/s respectively. The flood extent of the forecasted period is 32 km2; depth ranges 0.01 m to 3.5 m; and velocity ranges from 0 to 2.375 m/s. This technique has shown to be an effective way of flood forecasting and modeling. Integrating Rainfall Runoff model with hydrodynamic model provides thus good alternative for flood forecasting and modeling.

Keywords: SWAT; LISFLOOD; WRF; Extreme weather; Forecasting and modeling

Citation: Desalegn A, Demissie S, Admassu S (2016) Extreme Weather and FloodForecasting and Modelling for Eastern Tana Sub Basin, Upper Blue Nile Basin,Ethiopia. Hydrol Current Res 7:257. Doi: 10.4172/2157-7587.1000257

Copyright: © 2016 Desalegn A, et al. This is an open-access article distributedunder the terms of the Creative Commons Attribution License, which permitsunrestricted use, distribution, and reproduction in any medium, provided theoriginal author and source are credited.

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