Asmerom, Tilahun Araya (2005) Assessing Surface Water Potential and Water Demand in Genale Dawa River Basin. Masters thesis, Addis Ababa University.
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Abstract
This study is intended to quantify the amount of surface water potential leaving the entire basin (Genale Dawa) as surface runoff and water demand considering the large scale projects in Genale Dawa river basin which covers an area of 168,000 km2 Land use, land slope, soil and hydro –meteorological data were used to characterize the hydrology of the study area. Soil and Water Assessment Tool (ArcSWAT) model was used to determine the surface water potential leaving the entire basin as surface runoff in mean annual basis while for the water demand assessment Water Evaluation and Planning (WEAP) model was used. The estimated mean annual precipitation of the basin is 810.5 mm. The estimated mean annual actual evapotranspiration is 469.8 mm while the estimated potential evapotranspiration is 1304.4 mm. The estimated mean annual runoff leaving the entire basin is 6.37 billion cubic meters which corresponds to 37.92 mm mean annual runoff depth. The source of surface water availability is directly surface runoff generated from the catchments of the area as there are no water islands or lakes in the basin. The water demand assessment was done for only selected large scale irrigation, hydropower and water supply projects. Two large scale irrigation projects, one large scale hydropower project and five water supply schemes were selected. The five water supply schemes were intended to serve 143,865 people in the base year. The water supply demand is very small as compared to the irrigation water demand. The irrigation water demand covers 98.13% of the total annual water demand for all demand sites. Both water supply and hydropower take 1.87% of the total annual water demand in the current account year 2013. But the water supply and hydropower demand coverage increased to 2.84% of the total annual demand in the year 2025 due to fast population growth.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | ArcGIS, ArcSWAT, WEAP, Water Demand, Runoff, Genale Dawa River Basin |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TA Engineering (General). Civil engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | Africana |
| Depositing User: | Andriamparany Edilbert RANOARIVONY |
| Date Deposited: | 02 Jul 2018 10:02 |
| Last Modified: | 02 Jul 2018 10:02 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/6370 |
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