Cedar City - Greens Lake No. 2 Reservoir Report

Last Updated: December 5, 2025

Cedar City - Greens Lake No.


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Summary

2 is a crucial water resource infrastructure located in Iron, Utah, designed by NRCS, Bowen Collins, and USDA NRCS to address flood risk reduction in the area. Completed in 1958, this earth dam stands at a structural height of 43.5 feet with a hydraulic height of 40 feet, serving the primary purpose of flood risk reduction. With a storage capacity of 61 acre-feet and a normal storage of 28 acre-feet, this dam plays a significant role in managing water resources in the region.

Managed by the Utah Division of Water Rights, Cedar City - Greens Lake No. 2 is state regulated, permitted, inspected, and enforced to ensure its structural integrity and operational efficiency. The dam has a spillway width of 75 feet and a hazard potential classified as significant, requiring a biennial inspection frequency to assess its condition and safety. Despite being not rated in terms of its condition assessment, this dam continues to play a critical role in mitigating flood risks and safeguarding the surrounding communities in Cedar City.

Located within a pristine natural setting, Cedar City - Greens Lake No. 2 is an essential piece of infrastructure that exemplifies the collaboration between local government and federal agencies in ensuring water resource management and climate resilience. With its strategic design and operational oversight, this dam stands as a testament to effective flood risk reduction measures and serves as a vital asset in the overall water resource infrastructure of Utah.

Year Completed

1958

Dam Length

1220

River Or Stream

UNNAMED

Primary Dam Type

Earth

Hydraulic Height

40

Drainage Area

1

Nid Storage

61

Structural Height

43.5

Hazard Potential

Significant

Nid Height

44
       
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.