Irontown Dam Reservoir Report

Last Updated: May 3, 2026

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Irontown Dam, located in Iron County, Utah, serves as a critical infrastructure for irrigation purposes along the Little Pinto Creek.


Summary

Built in 1973 by the USDA NRCS, this private-owned Earth dam stands at a structural height of 24 feet and has a hydraulic height of 18 feet. With a storage capacity of 54 acre-feet and a drainage area of 28.4 square miles, the dam plays a vital role in water resource management in the region.

Managed by the Utah Division of Water Rights, Irontown Dam is subject to state regulations, inspections, and enforcement to ensure its safety and functionality. The dam's hazard potential is deemed significant, highlighting the importance of regular assessments and emergency preparedness. Although its condition assessment is currently not rated, the dam's last inspection in June 2019 indicates a thorough monitoring process in place.

For water resource and climate enthusiasts, Irontown Dam offers a fascinating case study in dam engineering and management. Situated in a picturesque location in Newcastle, Utah, this structure not only supports irrigation activities but also contributes to the overall water security in the region. With its history dating back to the early 1970s, the dam stands as a testament to the collaborative efforts of federal and state agencies in ensuring sustainable water management practices for the community.

15-Day Long Term Forecast


Year Completed

1973

Dam Length

405

River Or Stream

LITTLE PINTO CREEK

Primary Dam Type

Earth

Hydraulic Height

18

Drainage Area

28.4

Nid Storage

54

Structural Height

24

Hazard Potential

Significant

Nid Height

24
       
Seasonal Comparison

5-Day Hourly Forecast Detail

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.