Ash Creek Reservoir Report

Last Updated: December 5, 2025

Ash Creek is a privately owned irrigation dam located in Pintura, Utah, along the Ash Creek river.


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Summary

Completed in 1960, this rockfill dam stands at a structural height of 138 feet and has a hydraulic height of 98 feet, providing a storage capacity of 12,250 acre-feet for irrigation purposes. The dam is regulated by the Utah Division of Water Rights and undergoes regular inspections, with the last one conducted in October 2020, revealing a fair condition assessment.

With a drainage area of 134 square miles, Ash Creek Dam plays a crucial role in water resource management in Washington County, Utah. Its high hazard potential necessitates close monitoring and adherence to safety guidelines, ensuring the protection of downstream communities in case of emergencies. Despite its age, the dam continues to serve its primary purpose effectively, highlighting the importance of maintaining and assessing the condition of critical water infrastructure in the face of changing climate patterns. Passionate water resource and climate enthusiasts will find Ash Creek Dam to be a fascinating example of human intervention in managing water resources in arid regions like southern Utah.

Year Completed

1960

Dam Length

450

River Or Stream

ASH CREEK

Primary Dam Type

Rockfill

Hydraulic Height

98

Drainage Area

134

Nid Storage

12250

Structural Height

138

Hazard Potential

High

Nid Height

138
       
Seasonal Comparison

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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.