This dam was first proposed in the 1930s as part of the Bureau of Reclamation's Kendrick Project, which would regulate the flow of the North Platte River in order to improve agriculture in the valleys surrounding Casper, Wyoming.
Originally known as the Casper-Alcova Project, it was authorized by the National Industrial Recovery Act on June 16, 1933 in response to the Great Depression.
The project was renamed the Kendrick Project on August 9, 1937 in honor of Wyoming politician John B. Kendrick.

In 1934, Winston Brothers Company and Associates won the construction contract of Seminoe Dam.
Groundbreaking of the site was on February 20, 1936, with preliminary blasting and excavations.
The diversion tunnel for the North Platte was completed on January 17, 1937, with one fatality, and by May of that year, a cofferdam was completed to a sufficient height to divert the river into the new channel.
Concrete pouring began on January 19, 1938, and the last bucket was emptied on December 21, 1938.
Water storage began on April 2, 1939, when the outlet tunnels were closed.
The dam's power station was finished and the entire project was declared operational on August 3, 1939.
A total of two deaths and several serious injuries resulted from the construction, and a pair of active faults that cut across the canyon near the dam site had to be excavated and filled in.

On March 25, 1969, a helicopter experienced engine problems and crashed into the rocky canyon near Seminoe dam killing Bureau of Reclamation employees David McMillan and Howard Leroy Gates. (
Altoona Mirror, April 21, 1969)
When the project was first completed, it delivered water to just 600 acres (240 ha), but has progressed steadily, and by 1980 supplied irrigation water to 22,581 acres (9,138 ha) in the Casper valley.

The dam is suffering from a degrading Alkali–silica reaction that has damaged its structural integrity.
This dam was first proposed in the 1930s as part of the Bureau of Reclamation's Kendrick Project, which would regulate the flow of the North Platte River in order to improve agriculture in the valleys surrounding Casper, Wyoming. Originally known as the Casper-Alcova Project, it was authorized by the National Industrial Recovery Act on June 16, 1933 in response to the Great Depression. The project was renamed the Kendrick Project on August 9, 1937 in honor of Wyoming politician John B. Kendrick.
In 1934, Winston Brothers Company and Associates won the construction contract of Seminoe Dam. Groundbreaking of the site was on February 20, 1936, with preliminary blasting and excavations. The diversion tunnel for the North Platte was completed on January 17, 1937, with one fatality, and by May of that year, a cofferdam was completed to a sufficient height to divert the river into the new channel. Concrete pouring began on January 19, 1938, and the last bucket was emptied on December 21, 1938. Water storage began on April 2, 1939, when the outlet tunnels were closed. The dam's power station was finished and the entire project was declared operational on August 3, 1939. A total of two deaths and several serious injuries resulted from the construction, and a pair of active faults that cut across the canyon near the dam site had to be excavated and filled in.
On March 25, 1969, a helicopter experienced engine problems and crashed into the rocky canyon near Seminoe dam killing Bureau of Reclamation employees David McMillan and Howard Leroy Gates. (Altoona Mirror, April 21, 1969)
When the project was first completed, it delivered water to just 600 acres (240 ha), but has progressed steadily, and by 1980 supplied irrigation water to 22,581 acres (9,138 ha) in the Casper valley.
The dam is suffering from a degrading Alkali–silica reaction that has damaged its structural integrity.
Seminoe Dam