Five Springs No. 2 Reservoir Report

Last Updated: December 5, 2025

Five Springs No.


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Summary

2 is a privately owned earth dam located on Five Springs Creek in Big Horn, Wyoming. Built in 1970 for irrigation purposes, this dam stands at a height of 32 feet and has a storage capacity of 133 acre-feet. Despite its low hazard potential, the dam's condition assessment is rated as poor, indicating a need for maintenance and repairs to ensure its continued safety and functionality.

The dam features an uncontrolled spillway with a width of 10 feet and an outlet gate with a single valve. Although the risk assessment for this structure is moderate, with a rating of 3, there are no documented emergency action plans or inundation maps prepared for potential incidents. The last inspection in September 2020 highlighted the dam's poor condition, emphasizing the importance of regular maintenance and monitoring to prevent any safety concerns for downstream communities or the surrounding environment.

As a significant part of the local water resource infrastructure, Five Springs No. 2 serves as a vital component for agricultural irrigation in the area. With its location in the Omaha District and under the regulatory oversight of the Wyoming State Engineer's Office, continued attention and investment in the maintenance and safety of this dam are crucial to ensure its ability to support the water needs of the community while minimizing any potential risks associated with its operation.

Year Completed

1970

Dam Length

337

Dam Height

32

River Or Stream

FIVE SPRINGS CREEK

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

27

Nid Storage

133

Structural Height

32

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

32
       
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.