Endgate Reservoir Report
Nearby: 002 - Shs Meadow Pasture
Last Updated: December 13, 2025
Endgate, located in Campbell County, Wyoming, is a private earth dam completed in 1967 for the primary purposes of fire protection, stock, and small fish pond.
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Summary
The dam stands at 18 feet in height and spans 605 feet in length, with a maximum storage capacity of 144 acre-feet. Situated on the East Prong Spotted Horse Creek, Endgate serves as a vital resource for water management in the region, with a surface area of 12 acres and a normal storage capacity of 68 acre-feet.
Despite its importance, Endgate is currently in poor condition, with a low hazard potential rating. The last inspection in July 2018 revealed the need for improvement, with a moderate risk assessment rating of 3. Although the dam does not have an Emergency Action Plan (EAP) in place, it is regularly inspected every 5 years to ensure the safety of the surrounding area. With its strategic location and critical role in water resource management, Endgate serves as a key infrastructure for fire protection and agricultural activities in the region, highlighting the importance of proactive maintenance and risk management measures for sustainable water resource utilization in the face of changing climate conditions.
Year Completed |
1967 |
Dam Length |
605 |
Dam Height |
18 |
River Or Stream |
EAST PRONG SPOTTED HORSE CREEK |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
13 |
Nid Storage |
144 |
Structural Height |
18 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wild Horse Creek Near Arvada
|
0cfs |
Powder River At Arvada
|
180cfs |
Clear Creek Near Arvada
|
256cfs |
Powder River At Moorhead Mt
|
60cfs |
Little Powder River Ab Dry Creek
|
1cfs |
Stonepile Creek At Mouth
|
3cfs |
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.
Endgate