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1 Erkossa, Teklu; Hagos, Fitsum; Lefore, Nicole. 2014. Proceedings of the Workshop on Flood-based Farming for Food Security and Adaption to Climate Change in Ethiopia: Potential and Challenges, Adama, Ethiopia, 30-31 October 2013. Colombo, Sri Lanka: International Water Management Institute (IWMI). 178p. [doi: https://doi.org/10.5337/2014.233]
Flood water ; Flood irrigation ; Food security ; Climate change ; Adaptation ; Irrigation schemes ; Irrigation systems ; Spate irrigation ; Livestock products ; Crop production ; Siltation ; Arid zones ; Semiarid zones ; Community involvement ; Water rights ; Water resources ; Water harvesting ; Water use ; Land rights ; Poverty ; Households ; Living standards ; Nutrition ; Malnutrition ; Drought ; Farmers ; Indicators ; Sedimentation ; Canals ; Discharges ; Models ; Surface runoff ; Calibration ; Rainfed farming ; Agriculture ; Technology transfer / Africa / Ethiopia / Africa South of Sahara / Oromia Region / Tigray Region / Keleta River / Boru River
(Location: IWMI HQ Call no: IWMI Record No: H046909)
(2 MB)
2 Teso, E.; Alamirew, T.; Olumana, M. 2014. Predicting runoff yield using SWAT model and evaluation of Boru Dodota Spate Irrigation Scheme, Arsi Zone, southeastern Ethiopia. In Erkossa, Teklu; Hagos, Fitsum; Lefore, Nicole. (Eds.). Proceedings of the Workshop on Flood-based Farming for Food Security and Adaption to Climate Change in Ethiopia: Potential and Challenges, Adama, Ethiopia, 30-31 October 2013. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.95-113.
Irrigation schemes ; Spate irrigation ; Runoff ; Catchment areas ; Water yield ; Runoff ; Forecasting ; Hydrology ; Models ; Soils ; Meteorological data ; Watersheds ; Water balance ; Rain ; Land use ; Rivers ; Flow discharge / Southeastern Ethiopia / Arsi Zone / Boru Dodota Spate Irrigation Scheme / Boru River / Keleta River
(Location: IWMI HQ Call no: IWMI Record No: H046942)
(304 KB)
For strategic planning and decision making on water-related development projects systematic assessment of the availability of water resources is imperative. Nevertheless, such information is rarely available for many of the subbasins in Ethiopia. Hence, ungauged catchments need to be modeled using hydrologic models. This study was initiated with the objective of calibrating and validating SWAT model on Keleta River gauged watershed (about 761.89 km2 ) so that it can be used to predict runoff on a monthly, seasonal and annual basis, and evaluate the Boru Dodota spate irrigation scheme that has a similar hydrometeorological condition with the Keleta Watershed. Keleta River’s observed flow data were used for sensitivity analysis, model calibration and validation. The result of model performance analysis demonstrated a good agreement between the average monthly simulated and measured values: Nash-Sutcliffe model efficiencies (NSE) of 0.71 for calibration and 0.73 for validation periods. Moreover, the coefficients of determination (R2 ), 0.73 and 0.76, were obtained during the same period. The calibrated parameter on the gauged catchment was in turn used to estimate runoff yield of the ungauged catchment. The simulated mean monthly and average annual water yields of the Boru River Watershed were found to be 0.53 and 6.4 m3 s-1, respectively. The 70% dependable wet season water yield of the catchment was 3.41 m3 s-1, and crop water requirement of the command area was 1.2 ls-1ha-1. The water yield from the catchment can irrigate only 2,842 ha of land out of the pre-designed 5,000 ha of land of the Boru Dodota spate irrigation scheme. In conclusion the SWAT model can be used to analyze ungauged watershed runoff yield in areas that have similar hydrometeorological characteristics as those of the Keleta Watershed in the region. The information obtained can then be used to redesign the spate system or a conventional irrigation system.
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