Highlights The most sensitive parameter for all three watersheds was CN2, implying that this parameter was sensitive to different climates. In the arid climate, the SWAT model (R2 = 0.71, NS = 0.64) performed better than the simple IHACRES model (R2 = 0.65, NS = 0.61). Under an arid climate the IHACRES-simulated streamflow was greater than observed values, indicating that the model overestimated streamflow in arid climates. In spring season SWAT-simulated peak flow was lower than observed data.
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