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The Central Arizona Project is a 336-mile system that delivers water to Maricopa, Pinal and Pima counties.

As we experience shortage on the Colorado River, what is the future of the CAP water supply?

Be informed about your water supply — get CAP’s Know Your Water News delivered to your inbox.

Horseshoe Bend Arizona

Adapting to shortage

For decades, CAP been planning for Colorado River shortage.

While collaborating with partners to address impacts from extended drought and overallocation of water, CAP remains focused on maintaining a reliable system for deliveries of water now and into the future.

CAP and climate change

What’s CAP doing about climate change?

See what CAP is doing to adapt to the effects of drought and climate change while still delivering water to more than 80 percent of the state’s population in central and southern Arizona.

Welcome to the CAP

So what is Central Arizona Project?

Learn from our virtual tour guide about the CAP system and the vital impact the water CAP delivers has on our desert state.

This includes learning about:

  • CAP’s history
  • The amazing infrastructure that transports the water
  • The essential workforce that makes it all work