Slough Reservoir Reservoir Report
Nearby: Rigbys Mcintosh No. 1
Last Updated: December 23, 2025
Slough Reservoir, located in Fremont, Wyoming, is a federally owned dam managed by the Bureau of Land Management.
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Summary
Built in 1939, this gravity dam serves multiple purposes, including fire protection, stock watering, and small fish pond habitat. With a structural height of 16 feet and a hydraulic height of 12 feet, the reservoir has a storage capacity of 127.91 acre-feet and a normal storage level of 57.1 acre-feet.
Despite its low hazard potential and fair condition assessment, Slough Reservoir is equipped with an uncontrolled spillway and lacks outlet gates. The dam's surrounding area covers approximately 14.13 acres and is primarily fed by the Woods Gulch stream. The reservoir's risk assessment indicates a moderate risk level, prompting a 5-year inspection frequency to ensure its continued safety and functionality. With its historical significance and multi-faceted utility, Slough Reservoir stands as a testament to the enduring importance of water resource management in the face of changing climate patterns.
Year Completed |
1939 |
Dam Length |
390 |
River Or Stream |
WOODS GULCH |
Primary Dam Type |
Gravity |
Surface Area |
14.13 |
Hydraulic Height |
12 |
Nid Storage |
127.91 |
Structural Height |
16 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
16 |
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.
Slough Reservoir
Ice Slough