Hydrological Trend, Variability & TS Modeling of Weyib Catchment

The changes in trends of extreme rainfall events have predominant effect on hydrological extreme events such as floods and droughts. The hydrological extreme events (flood and drought) have significant impact on human, ecology and agricultural sector particularly on crop production. The drought and flood event have been recurring phenomena in Weyib catchment which is located in Ganale-Dawa River Basin,Ethiopia. The main goal of this work is to assess trend, spatio-temporal variability of rainfall and runoff, and time series(TS) modeling of major tributaries of Weyib River catchment. For this study, stream flow records from six flow-gauging stations in four major river catchment of the weyib between(1981-2008) and six precipitation stations all over the weyib catchment between(1984-2014) were studied at monthly, seasonal, and annual scales. The results of this study are expected to assist water resources managers and policy makers in making better planning decisions in the catchment.