Lake Size: 50 Acres
Deepest Depth: Average Depth 10 feet
Latitude: 32.847778
Longitude: -111.483611
Lake Level Above Sea Level: 1,500 feet (460 meters)
Counties: Pinal county
Cities: 11 Miles South of Coolidge
Lake Management: San Carlos Irrigation Project

Information: Picacho Reservoir is just 11 miles (18 km) south of Coolidge in central Arizona. The reservoir was built in the 1920s as part of the San Carlos Irrigation Project. The reservoir's original purpose was water storage and flow regulation for the Florence-Casa Grande and Casa Grande Canals. The lake's design capacity was 24,500 acre feet (30,200,000 m3) of water, with a surface area of over 2 square miles (5.2 km2). Over the years, siltation and vegetation have reduced the capacity and surface area, so that much of the reservoir is a shallow marsh with extensive stands of cattails and rushes. Water level is highly variable, and the lake is completely dry in some years. Special note: If you'd like to visit this reservoir go prepared. This is an extremely difficult location to find, there is no signage indicating the way.