Weaver Reservoir Report
Last Updated: December 5, 2025
Weaver, located in Albany County, Wyoming, is a private dam with a primary purpose of fire protection, stock, or small fish pond.
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Summary
Completed in 1972, this earth dam stands at 29 feet high and spans 495 feet in length, with a maximum storage capacity of 145 acre-feet and a normal storage of 100 acre-feet. The dam serves the functions of irrigation, in addition to its primary purposes, and is situated on Harney Creek, a tributary of the Laramie River.
Despite its low hazard potential, Weaver's condition assessment is rated as poor, indicating a need for maintenance and repairs. The dam is inspected every 5 years, with the most recent assessment conducted in July 2021. The spillway type is uncontrolled, with a width of 20 feet, and the outlet gates consist of a single slide (sluice gate). While the risk assessment is moderate, with a score of 3, there are currently no specific risk management measures or emergency action plans in place for Weaver.
For water resource and climate enthusiasts, Weaver presents an intriguing case study of a privately owned dam in Wyoming that serves multiple water management purposes. With its unique design features and operational characteristics, Weaver demonstrates the importance of regular inspections and maintenance to ensure the safety and effectiveness of water infrastructure in the face of changing climate conditions. As efforts continue to address the poor condition assessment and moderate risk level of Weaver, there is a valuable opportunity for stakeholders to collaborate on enhancing the resilience of this essential water resource facility.
Year Completed |
1972 |
Dam Length |
495 |
Dam Height |
29 |
River Or Stream |
HARNEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
23 |
Drainage Area |
3.1 |
Nid Storage |
145 |
Structural Height |
29 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Vedauwoo
|
||
Vedauwoo Campground
|
||
Tie City Campground
|
||
Tie City
|
||
Pole Creek Dispersed Campground
|
||
Yellow Pine Campground
|
Weaver