ABSTRACT
Improved understanding of hydro-climatic variabilities and associated hydrological processes at different space and time domain is indispensable for enhanced water resources management in the semi-arid Upper Tekeze basin. The combined use of secondary and primary datasets, remote sensing, laboratory analysis, and hydrological modelling allowed the hydrological processes and their change to be studied. The relationships between hydrological and climatic trends were analyzed to identify to what extent the hydrological changes in the basin were driven by the climate. In contrast, streamflow in most hydrological stations exhibited a decreasing trend in the dry, short, main rainy seasons and annual totals. Findings from both Mann-Kendall and Pettitt tests are consistent for all seasons and stations, but the timing of change points differs for most stations. Hydrological alteration indicators were used to verify if the hydrological regime of a catchment changes due to Soil and Water Conservation intervention programs.
