Abstract: This study tried to investigate trends and variabilities in mean and extreme hydro-climatic variables in Wabi Shebele River Basin using data based statistical approach. Linear trend investigation and Mann-kendall trend significance tests are performed as a preliminary analysis to see trends on mean discharges and climate variables, while Quantile Perturbation Method (QPM) analysis is conducted to detect clear oscillating patterns and trends in extremes. The result indicates that less increasing trend in mean annual discharge in the basin up to ...
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Topics: 
Climatology
Physical geography