Modeling of Flood Hazard Management for Forecasting and Emergency Response of ‘Koka’ Area within Awash River Basin Using Remote Sensing and GIS Method

Alemayehu, Zewdie (2007) Modeling of Flood Hazard Management for Forecasting and Emergency Response of ‘Koka’ Area within Awash River Basin Using Remote Sensing and GIS Method. Masters thesis, Addis Ababa University.

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Abstract

Floods are one of the common natural disasters occurring in many parts of the world. Floods result in damage to human life, infrastructure and deterioration of the environment. The socio economic and ecological impacts of floods are devastating in Africa and other developing countries, because most of them do not have real time forecasting technology or resources for post disasters rehabilitation. Flood hazard assessment is based on information on the intensity and frequency of flood events. Flood in Ethiopia is a major problem; it destroys life and property every year. In the Awash River basin, especially in upper Awash (Koka) extensive use of the land for agriculture and high pressure on the forest for fire wood expose the area for severe flooding and erosion during high rainfall. So Flooding has becomes a more common threat for the people living in Awash River basin. Accordingly, the objective of this thesis is preparation of flood hazard map. Since, rainfall is the major force driver of floods, the temporal and spatial distribution of precipitation is the key parameter for flood hazard mapping. Using remote sensing and GIS technology is proved to be the most advanced to identify the flood hazard prone areas of a watershed, region, or country in small and large scale. ‘Koka’ area which is a part of Awash River basin is experiencing severe floods for many years due to deforestation and erratic rainfall pattern. In the present study an attempt is made to identify the flood prone area by integrating different themes which has direct and indirect influence in occurrence of floods. Topography, soil, drainage, land use/cover and rainfall data are used to model the flood hazard of ‘Koka’ area within the Awash River basin using Satellite Remote Sensing data and GIS technology. GIS technology is one of the new technologies used to collect, store, analyze and display large amount of spatially distributed information. Using the above data a GIS based hazard map is prepared, this can be used for decision making process in the emergency response in flood disaster.

Item Type:	Thesis (Masters)
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Africana
Depositing User:	Selom Ghislain
Date Deposited:	19 Jun 2018 13:48
Last Modified:	19 Jun 2018 13:48
URI:	http://thesisbank.jhia.ac.ke/id/eprint/4653

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