Your search found 2 records
1 Yilma, Aster Denekew; Awulachew, Seleshi Bekele. 2009. Characterization and atlas of the Blue Nile Basin and its sub basins. In Awulachew, Seleshi Bekele; Erkossa, Teklu; Smakhtin, Vladimir; Fernando, Ashra (Comps.). Improved water and land management in the Ethiopian highlands: its impact on downstream stakeholders dependent on the Blue Nile. Intermediate Results Dissemination Workshop held at the International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia, 5-6 February 2009. Summary report, abstracts of papers with proceedings on CD-ROM. Colombo, Sri Lanka: International Water Management Institute (IWMI). 236p.
Maps ; River basins ; Watersheds ; Topography ; Climate ; Evapotranspiration ; Rain ; Evaporation ; Hydrology ; Land cover ; Meteorology ; Population / Africa / Ethiopia / Sudan / Blue Nile River Basin / Abbay Basin / Tana Sub Basin / Jemma Sub Basin / Muger Sub Basin / Guder Sub Basin / Beles Sub Basin / Dabus Sub Basin / Didessa Sub Basin / Fincha Sub Basin / Anger Sub Basin / Wenbera Sub Basin / Beshelo Sub Basin / Welaka Sub Basin / North Gojam Sub Basin / South Gojam Sub Basin / Dinder Sub Basin / Rahad Sub Basin / Gilgel Abay Watershed / Gumera Watershed / Anjeni Micro Watershed / Andit Micro Watershed
(Location: IWMI HQ Call no: IWMI 333.9162 G100 AWU Record No: H042502)
(57.34 MB)
2 Adgolign, T. B.; Srinivasa Rao, G. V. R.; Abbulu, Y. 2016. WEAP modeling of surface water resources allocation in Didessa Sub-Basin, West Ethiopia. Sustainable Water Resources Management, 2(1):55-70. [doi: https://doi.org/10.1007/s40899-015-0041-4]
Water resources development ; Surface water ; Water allocation ; Hydrology ; Simulation models ; Water supply ; Irrigation water ; Domestic water ; Water demand ; Water requirements ; Water use ; Water shortage ; Environmental flows ; Stream flow ; Watersheds ; River basins ; Tributaries / Ethiopia / Abbay Basin / Didessa Sub-Basin
(Location: IWMI HQ Call no: e-copy only Record No: H047974)
(3.68 MB)
The extensive water resources development plan that Ethiopia has recently embarked on encompasses all major river basins, including the Abbay Basin where Didessa Sub-basin is situated. The main objective of the study was to assess the impact of water resources development on instream and downstream water availability, and identify intra-sub-basin locations vulnerable to shortage of surface water, in Didessa Sub-basin. The Water Evaluation And Planning (WEAP) Tool was used to model the surface water resources allocation of the sub-basin, based on the water demand data extracted mainly from the Abbay Basin integrated development master plan. Existing demand sites were collected from irrigation and water supply sectors of the government. To estimate the crop water requirement and instream flows requirement (IFR), respectively CROPWAT 8.0 and Indicators of Hydrologic Alteration (IHA) programs were used. The shortage of recorded data of streamflow was supplemented by the outputs of SWAT hydrological model. Three development scenarios, viz., current development (2014), medium-term future development (2015–2030) and long-term future development (2031–2050), were built. It was demonstrated that the model sufficiently represented surface water flow of the sub-basin. The results indicated that at the last year of scenarios (2050), there will be a 1.101 billion cubic meters (BCM), i.e., 10.3 %, reduction in the total annual flow of Didessa River. Besides, it was found out that some of the schemes in Anger, Dabena and Upper Didessa watersheds will have unmet demands at the last year of scenarios. Nonetheless, it was shown that IFR of 5.46 BCM will be fully delivered at the outlet of Didessa River; hence, no sub-basin wide absolute scarcity of water would develop.
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