Your search found 4 records
1 White, E. D.; Easton, Z. M.; Fuka, D. R.; Collick, A. S.; Adgo, E.; McCartney, Matthew; Awulachew, Seleshi Bekele; Selassie, Y. G.; Steenhuis, T. S. 2008. Adapting the soil and water assessment tool (SWAT) for the Nile Basin. In Humphreys, E.; Bayot, R. S.; van Brakel, M.; Gichuki, F.; Svendsen, M.; Wester, P.; Huber-Lee, A.; Cook, S. Douthwaite, B.; Hoanh, Chu Thai; Johnson, N.; Nguyen-Khoa, Sophie; Vidal, A.; MacIntyre, I.; MacIntyre, R. (Eds.). Fighting poverty through sustainable water use: proceedings of the CGIAR Challenge Program on Water and Food, 2nd International Forum on Water and Food, Addis Ababa, Ethiopia, 10-14 November 2008. Vol.3. Water benefits sharing for poverty alleviation and conflict management; Drivers and processes of change. Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food. pp.22-26.
River basin management ; Watershed management ; Soil management ; Assessment ; Simulation models ; Water balance ; Water quality ; Stream flow ; Sedimentation ; Infiltration ; Runoff ; Climate / Ethiopia / Nile River Basin / Blue Nile River / Lake Tana Watershed / Anjeni Watershed
(Location: IWMI HQ Call no: IWMI 333.91 G000 HUM Record No: H041847)
http://cgspace.cgiar.org/bitstream/handle/10568/3708/IFWF2_proceedings_Volume%20III.pdf?sequence=1
https://vlibrary.iwmi.org/pdf/H041847.pdf
https://vlibrary.iwmi.org/pdf/H041847.pdf
(0.19 MB) (4.879MB)
2 Umer, Y. M.; Demissie, Solomon Seyoum; Tadele, K. 2010. Climate change impact assessment on soil water availability and crop yield in Blue Nile Basin: case study Anjeni Watershed, Ethiopia [Abstract only]. Paper presented at the Annual Tropical and Subtropical Agricultural and Natural Resource Management (Tropentag) Conference on World Food System - a contribution from Europe, Thematic scientific session on Water management, Zurich, Switzerland, 14 -16 September 2010. 1p.
Models ; Climate change ; Soil water ; Water availability ; Crop yield ; Watersheds ; River basins / Ethiopia / Anjeni Watershed / Blue Nile Basin / South Gojam Sub Basin
(Location: IWMI HQ Call no: e-copy only Record No: H043610)
http://www.tropentag.de/2010/proceedings/node123.html#3109
https://vlibrary.iwmi.org/pdf/H043610.pdf
https://vlibrary.iwmi.org/pdf/H043610.pdf
(0.09 MB)
3 Collick, A. S.; Easton, Z. M.; Adgo, E.; Awulachew, Seleshi B.; Zeleke, G.; Steenhuis, T. S. 2008. Application of a physically-based water balance model on four watersheds throughout the Upper Nile Basin in Ethiopia. In Abtew, W.; Melesse, A. M. (Eds.). Proceedings of the Workshop on Hydrology and Ecology of the Nile River Basin under Extreme Conditions, Addis Ababa, Ethiopia, 16-19 June 2008. Sandy, UT, USA: Aardvark Global Publishing. pp.93-113.
Water balance ; Models ; Watersheds ; River Basins ; Hydrology ; Soil conservation ; Evapotranspiration ; Runoff ; Rain ; Discharge ; Calibration ; Water content / Ethiopia / Blue Nile River Basin / Yeku Watershed / Maybar Watershed / Andit Tid Watershed / Anjeni Watershed
(Location: IWMI HQ Call no: 551.48 G136 ABT Record No: H044303)
(1.46 MB)
4 Yilak, D. L.; Tilahun, S. A.; Schmitter, Petra; Nakawuka, Prossie; Haile, Alemseged Tamiru; Kassawmar, N. T.; Guzman, C. D.; Steenhuis, T. S. 2015. Adaptation of the SCS [Soil Conservation Service] runoff equation for a (Sub) humid monsoon climate. Paper presented at the 3rd OpenWater Symposium, Addis Ababa, Ethiopia, 16-17 September 2015. 19p.
Climate change ; Monsoon climate ; Humid climate ; Runoff ; Adaptation ; Soil conservation ; Soil moisture ; Watersheds ; Water shortage ; Water balance ; Hydrology ; Models ; Highlands ; River basins ; Rain ; Runoff / Ethiopia / Ethiopian Highland / Maybar Watershed / Anjeni Watershed / Blue Nile Basin
(Location: IWMI HQ Call no: e-copy only Record No: H047279)
(0.01 MB)
The Soil Conservation Service Runoff equation was developed and tested for the temperate climate in the United States. Application to the monsoon climates has been only partially successful. The objective to adapt the SCS equation to a monsoon climate equation is to predict watershed runoff. The adaptation is based on the fact that in many humid areas the main mechanism for direct runoff is saturation excess and in monsoon climates the contributing area expands as a function of the cumulative effective rainfall ( Pe). This then translate in smaller watershed storage (S) in the equation. When estimating runoff contributing area within a watershed and assessing the runoff mechanisms, we have used the original concept of SCS-CN approach in a 113 ha Anjeni and 113ha Maybar Watersheds in the headwaters of the Blue Nile Basin, North Ethiopian highland. Analysis was done at daily, weekly and biweekly base using nine years of hydrological data (1988-97) by classifying the rainfall seasons in to six based on the seasonal cumulative of effective rainfall (Pe). The initial abstraction (Ia) was taken to be equal to the evapotranspiration loss (E) computed by Thornthwaite-Mather water balance method in replacement of the 20% of the potential storage (S). Effective rainfall (Pe) is the difference of total rainfall and Ia. The model performed more as the seasonal cumulative Pe is increased indicating that runoff responses occurred as the watershed saturated. The proportion of runoff contributing area (Af) increased linearly until the cumulative Pe up to nearly 500mm and then the watershed reaches in equilibrium for addition increase of Pe, which is in line with the concept of partial source area hydrology.
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