(7) Ranch 21-1-5674 Reservoir Report
Nearby: Al Capone Mill Iron Cross
Last Updated: December 11, 2025
(7) Ranch 21-1-5674 is a privately owned irrigation dam located in Campbell, Wyoming, along the Storm Draw river.
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Summary
Built in 1945, this earth dam stands at 28 feet high and spans 550 feet in length, with a storage capacity of 54 acre-feet. The dam serves multiple purposes including fire protection, stock watering, and irrigation, making it a vital resource for the surrounding area.
Despite being categorized as having a low hazard potential, the dam's condition assessment was rated as fair during its last inspection in June 2021. With a moderate risk assessment score of 3, there may be room for improvement in terms of risk management measures and emergency action preparedness. The dam's spillway type is uncontrolled, with a width of 200 feet, allowing for a maximum discharge of 2850 cubic feet per second.
Overall, (7) Ranch 21-1-5674 plays a crucial role in water resource management in the region, providing essential irrigation water for agricultural activities. As a privately owned structure, it is subject to state regulation and inspection, ensuring that it continues to function effectively and safely for the community it serves. With a focus on maintaining and improving its condition and risk management practices, this dam remains a key component of the local water infrastructure.
Year Completed |
1945 |
Dam Length |
550 |
Dam Height |
28 |
River Or Stream |
STORM DRAW |
Primary Dam Type |
Earth |
Surface Area |
4.69 |
Hydraulic Height |
23 |
Drainage Area |
0.2 |
Nid Storage |
54 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Clear Creek Near Arvada
|
256cfs |
Powder River At Moorhead Mt
|
60cfs |
Wild Horse Creek Near Arvada
|
0cfs |
Powder River At Arvada
|
187cfs |
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.
(7) Ranch 21-1-5674