Strong No. 4 Reservoir Report
Nearby: Ella Strong No. 1
Last Updated: December 5, 2025
Strong No.
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Summary
4 is a private irrigation dam located in Albany County, Wyoming, along the Strong Creek. Built in 1958, this earth dam stands at a height of 28 feet and has a hydraulic height of 22 feet. With a storage capacity of 89 acre-feet, the dam serves the primary purpose of irrigation and has a spillway width of 35 feet.
Despite its low hazard potential, Strong No. 4 is currently in poor condition and was last inspected in August 2020. The dam's risk assessment indicates a moderate risk level, with outdated emergency action plans and inadequate risk management measures. With a history of state regulation and inspection, the dam's structural integrity and safety are of concern, highlighting the need for proactive maintenance and rehabilitation efforts to ensure the long-term sustainability of water resources in the region.
As a key feature in the local water infrastructure, Strong No. 4 underscores the importance of effective dam management practices in the face of changing climate conditions. With its location in a critical watershed and potential impact on downstream communities, the dam's condition assessment and risk mitigation strategies are crucial for safeguarding water resources and enhancing climate resilience in the area.
Year Completed |
1958 |
Dam Length |
315 |
Dam Height |
28 |
River Or Stream |
STRONG CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
22 |
Nid Storage |
89 |
Structural Height |
24 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Laramie River Near Bosler
|
1950cfs |
Sybille Creek Ab Mule Creek
|
143cfs |
Laramie River At Laramie
|
48cfs |
Sybille Creek Ab Canal No. 3
|
93cfs |
Little Laramie River Near Filmore
|
671cfs |
Rock Creek Ab King Canyon Canal
|
12cfs |
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.
Strong No. 4