Auzqui No. 2 Reservoir Report

Last Updated: December 5, 2025

Auzqui No.


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Summary

2, located in Powder River, Montana, is a privately owned earth dam completed in 1953 for fire protection, stock, and small fish pond purposes. With a height of 31 feet and a hydraulic height of 25 feet, this dam has a storage capacity of 84 acre-feet, with a normal storage level of 43 acre-feet. The dam spans 264 feet in length and covers a surface area of 5 acres, serving as a vital resource for the surrounding community.

Managed by the Wyoming State Engineer's Office, Auzqui No. 2 is state-regulated, inspected, and permitted, ensuring its structural integrity and compliance with safety standards. The dam's condition assessment in 2017 rated it as fair, with a low hazard potential and moderate risk assessment. Emergency action plans and risk management measures are in place to mitigate any potential risks, further highlighting the commitment to maintaining the dam's safety and functionality.

With Liz Cheney representing Congressional District 00, Wyoming, where Auzqui No. 2 is situated, the dam continues to be a crucial asset for water resource management and climate resilience efforts in the region. As water resource and climate enthusiasts, understanding the significance of infrastructure like Auzqui No. 2 is essential for safeguarding communities, ecosystems, and water supplies in the face of changing environmental conditions.

Year Completed

1953

Dam Length

264

Dam Height

31

River Or Stream

NUMBER TWO DRAW

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

25

Nid Storage

84

Structural Height

31

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.