This research studies the effect of climate change on hydrological behavior two semi-arid basins. For this purpose, Soil and Water Assessment Tool (SWAT) model was used with simulation future scenarios, one Representative Concentration Pathway moderate (RCP 4.5) other extreme 8.5). Three periods were considered: close (2019–2040), medium (2041–2070), distant (2071–2100). In addition, several cl...