Hirsig Enl. Of R. P. Allen No. 1 Reservoir Report
Nearby: Hirsig No. 3 Hirsig No. 1
Last Updated: December 5, 2025
Hirsig Enl.
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Summary
of R. P. Allen No. 1, also known as R.P. Allen No.1, is a privately owned irrigation dam located in Hawk Springs, Wyoming, along the North Bear Creek. Completed in 1975, this earth dam stands at a height of 25 feet and has a maximum storage capacity of 104 acre-feet. With a low hazard potential and moderate risk assessment, this structure plays a crucial role in flood risk reduction and irrigation for the surrounding area.
Managed by the Wyoming State Engineer's Office, Hirsig Enl. of R. P. Allen No. 1 is inspected every 5 years, with the last assessment conducted in August 2019. The dam features an uncontrolled spillway, slide outlet gates, and a drainage area of 3.9 square miles. Despite its low hazard potential, the dam's moderate risk assessment underscores the importance of ongoing risk management measures to ensure its continued safety and effectiveness in water resource management.
Situated in Laramie County, Wyoming, this key infrastructure project is vital for water supply and flood control in the region. With Liz Cheney as the Congressional representative for the area, the Hirsig Enl. of R. P. Allen No. 1 serves as a testament to the collaborative efforts between private owners, state agencies, and federal stakeholders in sustainable water resource management and climate resilience.
Year Completed |
1975 |
Dam Length |
720 |
Dam Height |
25 |
River Or Stream |
NORTH BEAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
20 |
Drainage Area |
3.9 |
Nid Storage |
104 |
Structural Height |
25 |
Outlet Gates |
Slide (sluice gate) - 0 |
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.
Hirsig Enl. Of R. P. Allen No. 1