Beardsley No. 1 Reservoir Report
Nearby: East No. 1 Beardsley Brenner
Last Updated: December 6, 2025
Beardsley No.
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Summary
1, located in Niobrara, Wyoming, is a privately owned earth dam completed in 1962 for water supply purposes. This dam stands at 27 feet tall with a hydraulic height of 22 feet and a length of 300 feet, providing a storage capacity of 47 acre-feet. Situated on the Natural Bridge Draw river, this structure serves as a critical water resource for the surrounding area, with a surface area of 3 acres and a drainage area of 0.
Despite its age, Beardsley No. 1 remains in fair condition with a low hazard potential, as indicated by a risk assessment rating of moderate. The dam is regularly inspected, with the last assessment conducted in April 2017. It is state-regulated and meets all permitting, inspection, and enforcement requirements, ensuring the safety and integrity of the dam for continued water supply operations. With its strategic location and functional design, Beardsley No. 1 plays a crucial role in water management and climate resilience efforts in the region, contributing to sustainable water resource utilization and management in Wyoming.
Year Completed |
1962 |
Dam Length |
300 |
Dam Height |
27 |
River Or Stream |
NATURAL BRIDGE DRAW |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
22 |
Nid Storage |
47 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
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.
Beardsley No. 1