Saguaro Lake is the fourth reservoir on the Salt River, formed by the Stewart Mountain Dam in the U.S. state of Arizona. The lake is off State Route 87, about halfway between Phoenix and the ghost town of Sunflower. The dammed end of the lake is at , at an elevation of .
This lake is within the Tonto National Forest; the facilities are managed by that authority.
A large fish kill was documented in the lake in 2017-2019, and 2022,due to golden algae from the poor management of the Salt river chain by the AZGFD.
Fishing
The lake is good for champion bass and carp fishing. Species that can be caught in the lake include: Rainbow trout Largemouth bass Smallmouth bass Yellow bass Crappie Sunfish Channel catfish Walleye Tilapia Yellow perch Carp