Bruce Reservoir Report
Nearby: Four Mile Amerada Stock
Last Updated: December 10, 2025
Bruce is a privately owned earth dam located in Johnson, Wyoming, along the Pheasant Draw river.
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Summary
Completed in 1956, this dam serves multiple purposes including fire protection, stock watering, and creating a small fish pond. With a structural height of 22 feet and a spillway width of 40 feet, Bruce has a storage capacity of 70 acre-feet and covers a surface area of 9 acres.
Despite its age, Bruce is in fair condition with a low hazard potential. The dam has been inspected regularly, with the last assessment conducted in August 2017, revealing no imminent risks. While the drainage area is listed as zero, the dam's maximum discharge capacity is also reported as zero, indicating a low likelihood of flooding. Overall, Bruce presents a moderate risk level, but with proper risk management measures in place, it continues to serve its intended purposes effectively.
Located in a remote area along I-90, Bruce is overseen by the Wyoming State Enforement Office (SEO) and falls under state jurisdiction for regulation and inspection. With no associated structures and a primary purpose of providing essential water resources for fire protection and livestock, Bruce stands as a vital component of the local ecosystem and a testament to effective water resource management in Wyoming.
Year Completed |
1956 |
Dam Length |
460 |
Dam Height |
22 |
River Or Stream |
PHEASANT DRAW |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
17 |
Nid Storage |
70 |
Structural Height |
22 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
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.
Bruce
Powder River (Cantonment Reno)