Reculusa Reservoir Report
Nearby: Ethyl No. 2 Reno
Last Updated: December 9, 2025
Reclusa, located in Johnson, Wyoming, is a privately owned earth dam completed in 1957 for fire protection, stock, and small fish pond purposes.
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Summary
The dam stands at a height of 25 feet with a hydraulic height of 20 feet and a length of 444 feet, providing a storage capacity of 81 acre-feet. Despite its low hazard potential and fair condition assessment, Reclusa is regulated and inspected by the Wyoming State Engineer's Office, ensuring its safety and compliance with state regulations.
Situated on Young Draw, Reclusa serves as a crucial water resource for the city of Arvada, Wyoming, offering a surface area of 7 acres and a normal storage capacity of 40 acre-feet. With a spillway width of 36 feet and uncontrolled spillway type, the dam poses a moderate risk level of 3. Although no associated structures are present, Reclusa undergoes inspections every 5 years with the last assessment conducted in May 2018, ensuring its continued functionality and safety for the community it serves.
Owned and maintained by a private entity, Reclusa plays a vital role in fire protection and livestock management in the region, reflecting its importance as a sustainable water resource for local residents. Despite its age, the dam continues to meet state permitting and inspection requirements, demonstrating a commitment to environmental stewardship and climate resilience in the face of changing water resource challenges.
Year Completed |
1957 |
Dam Length |
444 |
Dam Height |
25 |
River Or Stream |
YOUNG DRAW |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
20 |
Nid Storage |
81 |
Structural Height |
25 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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.
Reculusa
Powder River (Cantonment Reno)