Recharge is a long-established and effective water management tool that is used throughout the world and allows renewable surface water supplies to be stored underground now for recovery later during periods of reduced water supply. CAP has developed seven recharge projects to store Colorado River water and currently own six and operate five.

CAP Recharge Program WebsiteTo view the story of CAP’s Recharge Program and its importance in Arizona’s water management, visit CAP’s Recharge Program Story Map. Please note: story maps do not support internet explorer; please use an alternate browser.

The water management benefits of recharge include:

  • Encourages the use of renewable water supplies instead of continued over-reliance on finite groundwater supplies;
  • Mitigates impacts of groundwater overdraft including subsidence and increased power costs for pumping water from greater depths;
  • Firms Arizona's water supply by providing a "reserve" of water that can be recovered during prolonged drought or during interruption in the water delivery capability of the Central Arizona Project (CAP) aqueduct;
  • Eliminates the need to construct costly surface reservoirs that are prone to excessive evaporation losses in Arizona's arid climate;
  • Provides an alternative mechanism to deliver CAP water through recharge and recovery instead of constructing costly water treatment plants and distribution facilities;
  • Improves the quality of recharged surface water by filtration through underlying sediments in a process known as soil aquifer treatment.