Kiewit No. 2 Reservoir Report

Last Updated: December 5, 2025

Kiewit No.


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Summary

2, located on East Pass Creek in Wyoming, is a privately owned earth dam primarily used for irrigation purposes. Built in 1973, this structure stands at a height of 34 feet and has a storage capacity of 92 acre-feet. Its spillway is uncontrolled with a width of 10 feet, and it is equipped with a slide gate as the outlet mechanism.

Despite being categorized with a low hazard potential, the dam's overall condition is assessed as fair. It undergoes inspections every five years, with the last assessment conducted in September 2019. The risk assessment for Kiewit No. 2 indicates a moderate risk level, emphasizing the importance of ongoing monitoring and maintenance to ensure its continued safety and functionality.

With its strategic location in the Sheridan County of Wyoming, Kiewit No. 2 plays a crucial role in supporting agricultural activities in the region. Climate enthusiasts and water resource experts would find this dam's design and operational details intriguing, highlighting the intersection of human infrastructure and natural water systems in the context of irrigation and environmental sustainability.

Year Completed

1973

Dam Length

600

Dam Height

34

River Or Stream

EAST PASS CREEK

Primary Dam Type

Earth

Surface Area

6

Hydraulic Height

29

Nid Storage

92

Structural Height

34

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

34
       
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.