Spencer Reservoir Report
Nearby: Slide Spencer No. 2
Last Updated: December 5, 2025
Spencer, also known as Lak Res and Enl of 1890r & 4917r, is a private water resource located in Weston County, Wyoming.
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Summary
This Earth dam, completed in 1952, serves primarily for irrigation purposes along the Stockade Beaver Creek. With a height of 45 feet and a storage capacity of 2847 acre-feet, Spencer plays a crucial role in supporting agricultural activities in the region.
Despite its fair condition assessment and significant hazard potential, Spencer is regulated and inspected by the State of Wyoming, ensuring its safety and reliability for the surrounding community. The dam features an uncontrolled spillway with a width of 95 feet and two valve outlet gates. With a moderate risk assessment rating, Spencer remains a vital infrastructure for water management in the area, providing a surface area of 126 acres and a drainage area of 20.1 square miles.
Managed by a private owner, Spencer contributes to the overall water infrastructure in Wyoming, showcasing the importance of maintaining and monitoring such critical resources for sustainable water management in the face of changing climate conditions. As climate enthusiasts, it is essential to recognize the role of dams like Spencer in water resource management and to support initiatives that promote the safety and resilience of these structures in the long run.
Year Completed |
1952 |
Dam Length |
1350 |
Dam Height |
45 |
River Or Stream |
STOCKADE BEAVER CREEK |
Primary Dam Type |
Earth |
Surface Area |
126 |
Hydraulic Height |
40 |
Drainage Area |
20.1 |
Nid Storage |
2847 |
Structural Height |
45 |
Outlet Gates |
Valve - 2 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Spencer