The satisfaction of water demands in semi-arid regions could be affected as a consequence of climate change. In this study, the impact due to future climate scenarios in the Chira and Piura basins located in northern Peru was evaluated. Two indicators, the demand satisfaction index (I1) and the demand reliability index (I2p), were used to analyze water scarcity problems. An analysis of the basins by region highlighted the importance of regulation infrastructure in minimizing the effects of climate change to meet water demands.