Arizona reservoirs
Ten reservoirs across three river systems, all visible on the AZWx live map. Each entity page below pulls daily storage and elevation from the operator's authoritative source.
Colorado River system
Four reservoirs on the lower Colorado River, all operated by the U.S. Bureau of Reclamation. Powell stores Upper Basin water for delivery downstream; Mead supplies the Lower Basin and Mexico; Mohave and Havasu re-regulate flow into Arizona, California, and Mexico's diversions.
Salt River chain
Four Salt River Project reservoirs along the Salt River, the headwaters of the Phoenix-area canal system. Roosevelt is the largest and the upstream-most; Apache, Canyon, and Saguaro re-regulate Roosevelt's releases on their way to the Phoenix metro.
Verde River chain
Two Salt River Project reservoirs on the Verde River, north of the Phoenix metro. Horseshoe is upstream; Bartlett is downstream and larger. Their releases continue down the Verde to its confluence with the Salt River.