Spring Creek (Enlargement) Reservoir Report

Nearby: Irene Paul

Last Updated: December 5, 2025

Spring Creek (Enlargement) is a privately owned irrigation dam located in Carbon County, Wyoming.


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Summary

Built in 1921, this earth dam stands at 35 feet high and stretches 550 feet in length, with a storage capacity of 432 acre-feet. The primary purpose of the dam is to provide water for irrigation, serving the surrounding agricultural lands in the area.

Despite its historical significance, Spring Creek (Enlargement) is currently rated as having poor condition, with a significant hazard potential. The dam has a hydraulic height of 30 feet and a maximum discharge of 314 cubic feet per second. The spillway is uncontrolled with a width of 17 feet, and the outlet gates consist of two valves. Regular inspections are conducted, with the last assessment taking place in May 2021, indicating the need for maintenance and potential upgrades to ensure safety and continued functionality.

Located in a moderate risk area, Spring Creek (Enlargement) plays a crucial role in the local water resource management system. As climate change impacts continue to be felt across the region, it is essential to prioritize the maintenance and improvement of this vital infrastructure to safeguard water availability for irrigation and other essential uses. Collaboration between private owners, state regulatory agencies, and relevant stakeholders will be essential in ensuring the resilience and longevity of this important water storage facility.

Year Completed

1921

Dam Length

550

Dam Height

35

River Or Stream

SPRING CREEK

Primary Dam Type

Earth

Surface Area

30

Hydraulic Height

30

Drainage Area

17

Nid Storage

432

Structural Height

35

Outlet Gates

Valve - 2

Hazard Potential

Significant

Foundations

Soil

Nid Height

35
       
Seasonal Comparison

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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.