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Alcova Dam
Alcova Dam WY1.jpg
Alcova Dam
Location Natrona County, Wyoming, USA
Coordinates 42°32′53″N 106°43′10″W / 42.54806°N 106.71944°W / 42.54806; -106.71944
Construction began 1935
Opening date 1938
Operator(s) U.S. Bureau of Reclamation
Dam and spillways
Type of dam Zoned earthfill
Impounds North Platte River
Height 265 feet (81 m)
Length 763 feet (233 m)
Dam volume 1,635,000 cu yd (1,250,000 m3)
Spillway type Gated spillway
Spillway capacity 55,000 cu ft/s (1,600 m3/s)
Creates Alcova Reservoir
Total capacity 184,405 acre feet (0.227460 km3)
Power station
Hydraulic head 180 ft (55 m)
Turbines 2 x 18 MW Francis turbines
Installed capacity 36 MW
Annual generation 92,408,000 KWh

Alcova Dam (National ID # WY01290) is a 265-foot (81 m) tall zoned earthfill dam in central Wyoming, built in 1935-38 on the North Platte River and operated by the U.S. Bureau of Reclamation for water storage and hydroelectric power generation. The dam was built as part of the Kendrick Project, formerly the Casper-Alcova Project, whose central features are Alcova and Seminoe dams.

Alcova Powerplant comprises two generating units, each 18 MW. The reservoir's capacity is 184,405 acre feet (0.227460 km3), but only 30,606 acre feet (0.037752 km3) may be used for irrigation.


Alcova Dam bridge
Carries Cottonwood Avenue

Alcova Canyon was first surveyed for potential damsites in 1903. In 1921 a dam was proposed at Alcova to divert water to Casper, irrigating 60,000 acres (24,000 ha). The project was authorized in 1933, with $15,000,000 allocated by 1936. Initially titled the Casper-Alcova Project, the effort was renamed the Kendrick Project in 1937 to honor Wyoming senator John B. Kendrick. Work on a diversion tunnel began in 1933. Work on the dam started in 1935, carried out by a joint venture of W.E. Callahan Construction of Dallas, Texas, and Gunther and Shirley of Los Angeles, California. Earthfill placement started in 1936.and was completed in 1937. The reservoir was filled in 1938, with final completion of the dam on May 8, 1938. The powerplant was not started until 1952, completed three years later.

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