Steven Reservoir Report

Last Updated: December 5, 2025

Steven is a privately owned irrigation dam located on Beaver Creek in Crook, Wyoming.


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Summary

Built in 1959, this earth dam stands at 20 feet high and has a storage capacity of 189 acre-feet. Despite its low hazard potential, Steven is currently in poor condition and is classified as having a moderate risk level, requiring regular inspections and maintenance to ensure its structural integrity.

The dam features an uncontrolled spillway with a width of 180 feet and one uncontrolled outlet gate. While it serves primarily for irrigation purposes, Steven's condition assessment in 2019 indicated a need for improvements to meet safety standards. With its location in a picturesque area near Hulett, Steven presents a unique opportunity for water resource and climate enthusiasts to study the impact of aging infrastructure on water management and conservation efforts in the region.

As one of the many dams under state jurisdiction in Wyoming, Steven's maintenance and risk management measures play a crucial role in ensuring the safety of surrounding communities and ecosystems. With its historical significance and functional importance for irrigation, Steven serves as a focal point for ongoing discussions on the sustainable management of water resources in the face of changing climate conditions.

Year Completed

1959

Dam Length

530

Dam Height

20

River Or Stream

BEAVER CREEK

Primary Dam Type

Earth

Surface Area

18

Hydraulic Height

15

Nid Storage

189

Structural Height

20

Outlet Gates

Uncontrolled - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
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.
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Area Campgrounds