# Boysen Unit of the Pick-Sloan Missouri Basin Program

Publisher: CapexCue
Canonical dossier: <https://capexcue.com/projects/boysen-unit-of-the-pick-sloan-missouri-basin-program-0b30229e1129e94e/>
Dossier reference: release 1 (9afa5ab1-a595-485b-8c82-90d9b0a3078f)

Released project intelligence

Oldest supporting observation: 2026-10-03T22:56:48.799133+00:00
Dossier released: 2026-10-16T16:31:55.210423+00:00
Source report dates and capture dates are listed per fact below; neither establishes an event date.

## Project summary

The Boysen Unit of the Pick-Sloan Missouri Basin Program comprises Boysen Dam, Boysen Reservoir, and Boysen Powerplant on the Wind River in Wyoming. The source places the unit about 20 miles south of Thermopolis and separately describes the reservoir as about 20 miles upstream from Thermopolis. The dam is described as a 220-foot zoned earthfill structure, the reservoir as having 802,000 acre-feet of total controlled storage, and the powerplant as having 15,000 kW of installed capacity in two units. The historical construction account gives a start date of September 19, 1947, and completion date of December 11, 1952.

## Evidence limits and unknowns

- The supplied page text has no publication date, so current operating condition is not established.
- The page does not establish current construction, rehabilitation, procurement, financing, or contract status.
- The linked Boysen Unit PSMBP document and page media, including images and captions, are not covered by the supplied evidence.

Current purchasing availability: unknown.
Source-dated plans do not establish current progress or available supplier packages.

## Project metadata

Country: United States
Region: North America
Physical assets: Hydropower
Derived from the exact released evidence; unresolved fields remain unclassified.

## Project category

Energy
Derived from the reviewed scope statement; delivery stage remains unclassified.
The unit consists of Boysen Dam, Boysen Reservoir, and Boysen Powerplant. The dam is described as a 220-foot zoned earthfill structure with a radial-gate-controlled overflow spillway and outlet works. The reservoir has 802,000 acre-feet of total controlled storage capacity at elevation 4,725 feet. The powerplant has 15,000 kW of installed capacity in two 7,500-kW units. The separate 1908 concrete dam described in the history was about 1.5 miles downstream of the present dam site and was removed in 1948; it is not part of this scope.
Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/projects/index.php?id=500 | published unknown | observed 2026-10-03T22:56:48.799133+00:00

Project overview
Oldest decisive evidence: 2026-10-03T22:56:48.799133+00:00
Newest evidence: 2026-10-03T22:56:48.799133+00:00
Knowledge reviewed: 2026-10-16T16:31:54.867352+00:00
Publication reviewed: 2026-10-16T16:31:54.867352+00:00

## Name
Boysen Unit of the Pick-Sloan Missouri Basin Program
Status: reported
Attribution: USBR Boysen agency project narrative
Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/projects/index.php?id=500 | published unknown | observed 2026-10-03T22:56:48.799133+00:00

## Scope
The unit consists of Boysen Dam, Boysen Reservoir, and Boysen Powerplant. The dam is described as a 220-foot zoned earthfill structure with a radial-gate-controlled overflow spillway and outlet works. The reservoir has 802,000 acre-feet of total controlled storage capacity at elevation 4,725 feet. The powerplant has 15,000 kW of installed capacity in two 7,500-kW units. The separate 1908 concrete dam described in the history was about 1.5 miles downstream of the present dam site and was removed in 1948; it is not part of this scope.
Status: reported
Attribution: USBR Boysen agency project narrative
Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/projects/index.php?id=500 | published unknown | observed 2026-10-03T22:56:48.799133+00:00

## Activity
Construction of Boysen Dam and Powerplant, including relocation of the CB&Q Railroad, began September 19, 1947, and was completed December 11, 1952. The construction account also describes relocation of 13.5 miles of track, a 1.25-mile tunnel, seven bridges, and two sidings.
Status: actual
Attribution: USBR Boysen agency project narrative
Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/projects/index.php?id=500 | published unknown | observed 2026-10-03T22:56:48.799133+00:00

## Location
Wyoming, on the Wind River. The page places the unit about 20 miles south of Thermopolis; its recreation description places the reservoir about 20 miles upstream from Thermopolis.
Status: reported
Attribution: USBR Boysen agency project narrative
Source: US Bureau of Reclamation screened government project narrative — https://www.usbr.gov/projects/index.php?id=500 | published unknown | observed 2026-10-03T22:56:48.799133+00:00


## Cite this dossier

CapexCue — Boysen Unit of the Pick-Sloan Missouri Basin Program — dossier released 2026-10-16T16:31:55.210423+00:00, release 1 (9afa5ab1-a595-485b-8c82-90d9b0a3078f) — https://capexcue.com/projects/boysen-unit-of-the-pick-sloan-missouri-basin-program-0b30229e1129e94e/.

For current information and later dossier updates, visit <https://capexcue.com/projects/boysen-unit-of-the-pick-sloan-missouri-basin-program-0b30229e1129e94e/>.
This file records the release identified above; the current dossier may change.