Surface Water Resource Allocation for Abaya-Chamo Sub-Basin Using Weap Model, Southern Ethiopian Rift Valley
| dc.contributor.advisor | Fiseha, Behulu (PhD) | |
| dc.contributor.author | Eyerus, Nigussie | |
| dc.date.accessioned | 2021-10-29T07:50:47Z | |
| dc.date.accessioned | 2023-11-11T08:32:38Z | |
| dc.date.available | 2021-10-29T07:50:47Z | |
| dc.date.available | 2023-11-11T08:32:38Z | |
| dc.date.issued | 2021-09 | |
| dc.description.abstract | The development of water resource projects, population growth, and increase in irrigation areas has a higher effect on excessive usage of water resources and causes exploitation of the existing river systems and ecosystem of the natural environment. Therefore, water allocation study is essential to maintain the ecosystem and to balance the water demand with the supply in the catchment. In the present study, the allocation of surface water resource carried out in Bilate watershed, in Abaya-Chamo sub-basin of Ethiopian Rift Valley Lake Basin. The necessary data used to define the hydrology of study area are: DEM, LULC and soil data, climatic and stream flow data. The main aim of this study is, quantifying the available surface water of the Bilate watershed and allocation to the required demand sites of different activities. There are 25 demand nodes used to estimate water requirements in the study area. This demand sites are domestic demand for urban and rural towns, livestock water demand and irrigation water demand. In addition, to quantify the water available in the catchment, soil moisture method is used for catchment simulation. Three scenarios were developed to evaluate the effect of population growth and irrigation area expansion on future water demand. The result of the study showed no unmet demand of water requirement in the reference scenario from the years 1987 to 2020 for all cumulative demands with annual water demand of 88 MCM. Under future population growth scenario (2020–2035), the total water requirement demand for domestic , industrial, livestock and irrigation water demand is 121MCM, 39MCM and 27 MCM with 8% unmet demand of total water requirement. For the irrigation expansion scenario II, for mean monthly irrigation water demand of 26.37 MCM, 0.4 MCM of the total monthly irrigation demand is unmet in the analysis. Scenario III (combination scenario) both population growth and irrigation expansion are considered and analyzed. Based on the simulation results from the total demand of 188MCM, the total unmet demand is found to be 9 MCM. Finally, the environmental flow requirement coverage of WEAP out put shows some unmet instream flow requirement in October and November. Therefore, it can be concluded that the occurrence of maximum water shortage in catchment will not happened up to 2035 and also the future water resources development in Bilate sub-basin need to be carefully designed to optimize the balance between demand and supply. More importantly, basin level planning and catchment protection shall be taken as integral component of water resources development. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/28407 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | WEAP | en_US |
| dc.subject | Bilate sub-basin | en_US |
| dc.subject | supply and demand | en_US |
| dc.subject | scenario | en_US |
| dc.subject | water allocation | en_US |
| dc.title | Surface Water Resource Allocation for Abaya-Chamo Sub-Basin Using Weap Model, Southern Ethiopian Rift Valley | en_US |
| dc.type | Thesis | en_US |