|Title:||Prediction and Flood Modeling For Kello Town|
|???metadata.dc.contributor.*???:||Dereje Hailu (PhD)|
|Keywords:||Flood Modeling;Kello Town;Prediction|
|Abstract:||Nowadays, extraordinary floods are common to many parts of Ethiopia causing a lot of losses to human lives as well as damage to property. Though, Kello town is been one among such places that has affected by flash flooding from rainfall, in particular of the ungauged Kello River which passes through the center of the town. This thesis is aimed to identify flood causative factors, peak flood estimation, delineate flood risk areas that can be affected by extraordinary floods and to recommend mitigation measures. This is accomplished by adopting application software's like Arc View GIS, HEC-HMS and HEC-RAS and related software’s. The data usage for this thesis is (DEM and contour), (soil, land use and 1:50,000 scale topo map) and text (rainfall and discharge) type. For precipitation modeling, ERA Intensity-frequency-duration curve is used for frequency storm. For geographic and terrain data, 30m resolution DEM for catchment, 4m contour interval for the town part and Kello Stream cross section are used. In this thesis, the flood magnitude is estimated for 2, 5, 10, 25, 50 and 100years return period peak flood discharge using Computer Programs HECGeo-HMS and HEC-HMS. And the corresponding results are estimated as 38.05, 47.38, 67.28, 81.87, 92.66 and 103.33m /sec. 50 and 100years peak discharge is used for further analysis which is flood mapping. Based on the result full of the town, the right and left side of the cultivated land and left and right sides of Kello Stream are found to be the vulnerable areas. According to the flood delineation an area of 92.7 and 95.5ha of land will be inundated by 50 and 100 year and this flood has an inundation depth of 4.7806m at the downstream of the catchment and decreases to the upstream of the catchment. Besides this mitigation measures considering different alternative measures levee construction is found to be best fitted for the study area along the selected reach of the Kello stream and Kello Town and the agricultural area.|
|Appears in Collections:||Thesis - Hydraulics Engineering|
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