Tunisia is a water-stressed country, which derives most ofits surface water from its northern regions. GivenNorthern Tunisia’s role as a water provider, this studyinvestigated the hydrological impacts of climate changeonfive catchments located in this region. Three hydro-logical models are considered: HBV, GR4, andIHACRES. Climate projections were derived from elevenhigh-resolution EURO-CORDEX regional climate mod-els (forced by general circulation models; GCM-RCMs).A quantile mapping (QM) bias correction method wasapplied to correct the climate simulations. Historicalstreamflow simulations (1970–2000), achieved by forcingthe hydrological models with GCM-RCM precipitationand temperature, werefirst assessed in order to select themost realistic GCM-RCMs for future projections. Theremaining bias corrected GCM-RCMs were then used toforce the hydrological models in order to achieveprojections of streamflow. The evaluation of the stream-flow projections was conducted over two time periods(i) mid-term: 2040–2070 and (ii) long-term: 2070–2100to identify the magnitude of the projected change ofstreamflow under the climate scenarios RCP 4.5 and RCP8.5. The hydrological projections were analyzed accord-ing to several metrics commonly used by water managers.