Stewart Mountain Dam

33°34′00″N 111°32′08″W / 33.56667°N 111.53556°W / 33.56667; -111.53556StatusOperationalConstruction began1928Opening date1930Owner(s)United States Bureau of ReclamationOperator(s)Salt River ProjectDam and spillwaysType of damArch damImpoundsSalt RiverHeight207 feet (63 m)^[1]Length1,260 feet (380 m)^[1]Elevation at crest1,533 feet (467 m)^[1]Width (crest)8 feet (2.4 m)^[1]Width (base)33 feet (10 m)^[1]Dam volume120,000 cubic yards (92,000 m³)^[1]ReservoirTotal capacity73,613 acre-feet (90,800,000 m³)^[1]Catchment area6,330 square miles (16,400 km²)^[1]Surface area1,260 acres (510 ha)^[2]Power StationOperator(s)Salt River ProjectTypeConventionalHydraulic head116 feet (35 m)^[1]Installed capacity13 MW

The Stewart Mountain Dam is a concrete thin arch dam located 41 miles northeast of Phoenix, Arizona. The dam is 1,260 feet (380 m) long, 207 feet (63 m) high, and was built between 1928 and 1930. The dam includes a 13,000 kilowatt (kW) hydroelectric generating unit that is operated by SRP (Salt River Project), an Arizona public utility. It is primarily operated during the summer months. The dam forms Saguaro Lake as it slows the passage of the Salt River in Maricopa County, Arizona. It was named after a ranch that used to be located nearby known as the Old Stewart Ranch.

A camp was built just below the dam in 1927 to house the construction workers; after the damn's completion it was turned into the Saguaro Lake Guest Ranch.^[3]

The dam was listed on the National Register of Historic Places in 2017.

Gallery

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  25 June 1936
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References

External links

• USBR website
• SRP website
• Historic American Engineering Record (HAER) No. AZ-12, "Stewart Mountain Dam, Spanning the Salt River, Tempe, Maricopa County, AZ", 65 photos, 61 data pages, 5 photo caption pages