The Central Avra Valley Storage and Recovery Project (CAVSARP) is located near the intersection of Sandario Road and Mile Wide Road west of Tucson in Avra Valley. The City of Tucson purchased this land in the 1970s with the intent of retiring the property from agricultural use.
In the mid-1990s, Tucson Water began pilot testing for underground storage in Avra Valley of Colorado River water transported to Tucson via the Central Arizona Project (CAP) canal. The full-scale CAVSARP facility was completed in 2003.
CAVSARP includes 11 recharge basins totaling 317 acres, 33 recovery wells, a reservoir, booster station and pipelines.
A sister underground storage project called Southern Avra Valley Storage and Recovery Project (SAVSARP) was completed in 2009 just a few miles to the south of CAVSARP. Tucson Water uses the two projects together to manage most of Tucson’s annual allocation of Colorado River water.