Fig 1.
Location and elevation map of study area.
Fig 2.
The dominant soils of Gilgel Gibe catchment.
Fig 3.
Average monthly rainfall of the selected stations.
Fig 4.
Monthly maximum and minimum temperature of the selected stations.
Table 1.
Description of the climate models (RCMS) from which data is obtained for this study.
Fig 5.
Flowchart of ArcSWAT processing steps for the Gilgel Gibe catchment.
Fig 6.
Sub-watersheds of the Gilgel Gibe catchment.
Fig 7.
Precipitation and temperature recording stations.
Fig 8.
Drainage in Gilgel Gibe catchment.
Fig 9.
Gilgel Gibe catchment river discharge gauging stations.
Fig 10.
Calibration and validation of average monthly streamflow.
Table 2.
Sensitivity analysis and calibrated parameters.
Table 3.
Changes in precipitation (%) across the four RCMs in RCP4.5 and RCP8.5 scenarios.
Fig 11.
Percentage change of projected average precipitation in Gilgel Gibe catchment for 2041–2070 and 2071–2099 under RCP4.5 and RCP8.5.
Table 4.
Changes in temperature (°C) across the four RCMs in RCP4.5 and RCP8.5 scenarios.
Table 5.
Changes in temperature (°C) across the four RCMs in RCP4.5 and RCP8.5 scenarios.
Fig 12.
Seasonal projected change in mean maximum temperature in Gilgel Gibe catchment for 2041–2070 and 2071–2099 under RCP4.5 and RCP8.5.
Fig 13.
Seasonal projected change in mean minimum temperature in Gilgel Gibe catchment for 2041–2070 and 2071–2099 under RCP4.5 and RCP8.5.
Table 6.
Changes of water balance components under a climate change.
Fig 14.
Impacts of climate change on water balance.
Fig 15.
Spatial patterns of the changes in surface runoff due to climate change.
Fig 16.
Spatial patterns of the changes in groundwater due to climate change.
Fig 17.
Spatial patterns of the changes in water yield due to climate change.
Fig 18.
Spatial patterns of the changes in Potential Evapotranspiration (PET) due to climate change.