Integrated spatial and temporal variability of the system water use efficiency in a lower Baro River watershed, Ethiopia

Abstract The Baro Akobo River, Gambella, is a representative of lower River watersheds with lost soils. Under eight landscapes, the geospatial and temporal variability water use efficiency (WUE) system WUE (sWUE) was investigated. In contrast WUE, sWUE takes runoff into account, better capturing combined effects soil management, climate change, land cover change on agricultural irrigation systems. total area 20,325. This study used GIS, RS, EasyFit, CROPWAT8.0 software. It allows automatic fitting distributions to data, selects best mathematical tool, quantifies yields WUE/sWUE. more helpful index than describe differences in holding capacity yield across landscapes. varies streamflow from its correlation runoff, coefficient variation (CV) 71% watershed. Evapotranspiration (ET) had CV 70%. Temporally, will decrease by 10% 2050, but spatial reach 25%. These methods improve infiltration storage, which reduce standing through ET raise sWUE.