*2.6.5.2.3 Hadejia river at Wudil gauge station*

The hydrograph for the Hadejia river presents the peak monthly streamflow shifting from August to September for two scenarios (**Figure 6**). This shift is likely linked to a delayed start of precipitation. The climate model median projects a reduction in discharge volumes from June to August amounting to −39 m3/s (−15%) under RCP8.5 and −40 m3/s (−15%) under RCP 4.5. An increase in river discharge volumes is shown from September to December under both RCPs, which is related to increasing precipitation. For the RCP 8.5, the cumulative increase of discharge volume is from September to December amounts to 133 m3/s (38%) for RCP8.5 and 80 m3/s (23%) for RCP4.5. When considering the individual GCMs, Three out of the five climate models show increasing volumes in discharge in the peak flow period for RCP8.5 (**Figure 8**). The largest increase is found for MIROC (**Figures 7** and **8**); however, the signal of change depends on the Individual model.

In all four rivers, hydrological simulations of the MIROC climate model reveal the highest discharge compared to the other four climate models in all cases.
