Climate Change Impacts on Blue and Green Water of Meki River Sub-Basin

Climate change (CC) is likely to have a negative effect on water balance components thereby increasing global scarcity. These effects, particularly in arid and semi-arid areas, not been fully understood, part because green was adequately represented the relevant assessments. This study analyzes spatiotemporal variations of blue resources under baseline future climate conditions by applying Soil Water Assessment Tool plus (SWAT+) model Meki River, located Central Rift Valley (CRV) Lake Basins Ethiopia. Based sensitive parameters, identified from sensitivity analysis, we calibrated validated SWAT + for period 1993 2000 1987 1992, respectively. During both calibration validation period, showed reasonable performance with Nash-Sutcliffe efficiency greater than 0.65. The then used assess effects CC (representative concentrations pathways, RCP, 4.5 8.5) River. We found that expected decrease RCPs (4.5 scenarios, but anticipated show more decline up 56% RCP 8.5 scenario. Oppositely, increase RCP8.5 projected cause larger (24%) when compared baseline. Overall, integrated modeling assessment can be as tool develop efficient strategies management