Warriner No. 2 Reservoir Report

Last Updated: December 5, 2025

Warriner No.


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Summary

2 is a privately owned irrigation dam located in Sheridan, Wyoming, along the Warriner Draw river. This earth dam, with a height of 30 feet and a length of 670 feet, was completed in 1941 and serves the primary purpose of irrigation. Despite its low hazard potential, the dam's condition assessment in 2017 was deemed poor, indicating a need for maintenance and potential upgrades.

With a maximum storage capacity of 121 acre-feet and a normal storage capacity of 58 acre-feet, Warriner No. 2 plays a vital role in water resource management in the region. The dam also features an uncontrolled spillway with a width of 60 feet and one valve outlet gate. Although the risk assessment for this dam is moderate, ongoing inspection and maintenance are crucial to ensuring its structural integrity and continued functionality in the face of changing climate conditions.

For water resource and climate enthusiasts, Warriner No. 2 serves as a case study in the importance of regular inspection, maintenance, and risk assessment for aging infrastructure in the face of increasing environmental challenges. As climate change brings about more frequent and severe weather events, ensuring the resilience of dams like Warriner No. 2 becomes increasingly crucial for sustainable water management and the protection of downstream communities and ecosystems.

Year Completed

1941

Dam Length

670

Dam Height

30

River Or Stream

WARRINER DRAW

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

25

Nid Storage

121

Structural Height

30

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
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.