Five Springs No. 1 Reservoir Report

Last Updated: December 5, 2025

Five Springs No.


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Summary

1 is a privately owned irrigation dam located in Big Horn, Wyoming, along the Five Springs Creek. Built in 1970, this earth dam stands at 24 feet high and spans 387 feet in length, with a storage capacity of 200 acre-feet. Despite its low hazard potential, the dam is currently rated as being in poor condition, with the last inspection in May 2020 revealing the need for improvements.

The dam features an uncontrolled spillway and a single valve outlet gate for water release. While it serves primarily for irrigation purposes, the dam's deteriorating condition raises concerns for its long-term reliability and safety. With a moderate risk assessment rating, there is a need for increased monitoring, maintenance, and potentially rehabilitation efforts to ensure the continued functionality of Five Springs No. 1 and the protection of downstream areas in the event of a breach or failure. Water resource and climate enthusiasts should keep a close eye on developments related to this aging irrigation infrastructure.

Year Completed

1970

Dam Length

387

Dam Height

24

River Or Stream

FIVE SPRINGS CREEK

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

19

Nid Storage

200

Structural Height

24

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

24
       
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.