Perkins & Kinney Reservoir Report

Last Updated: December 5, 2025

Perkins & Kinney, located in Park County, Wyoming, is a privately owned irrigation dam constructed in 1923 by designer Howard F.


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Summary

Bell. Situated along the South Fork Sage Creek, this earth dam stands at a height of 35 feet with a hydraulic height of 30 feet, serving primarily for irrigation purposes with a storage capacity of 1556 acre-feet. The dam is classified as having a low hazard potential, but its condition assessment is rated as poor, indicating a need for maintenance and possible rehabilitation.

Despite its age, Perkins & Kinney continues to play a crucial role in water resource management in the region, maintaining a surface area of 57 acres and a drainage area of 0. The dam features an uncontrolled spillway with a width of 8 feet and a single valve outlet gate for water release. While the dam's risk assessment is considered moderate, with a rating of 3, the last inspection in June 2019 highlighted the need for attention to ensure the structure's safety and functionality. Overall, Perkins & Kinney serves as a vital component of the local irrigation system, but ongoing maintenance and risk management measures are essential to safeguard its long-term effectiveness and safety in the face of changing climate conditions.

Year Completed

1923

Dam Length

250

Dam Height

35

River Or Stream

SOUTH FORK SAGE CREEK

Primary Dam Type

Earth

Surface Area

57

Hydraulic Height

30

Nid Storage

1556

Structural Height

35

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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.