Ashurst Lake Reservoir Report

Last Updated: December 5, 2025

Ashurst Lake, located in Coconino County, Arizona, is a state-regulated fish and wildlife pond with a primary purpose of supporting recreational activities and wildlife conservation.


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Summary

The dam, completed in 1954, stands at a height of 11.9 feet and has a storage capacity of 4,164 acre-feet. With a surface area of 230 acres and a maximum discharge of 2,860 cubic feet per second, Ashurst Lake provides a vital habitat for various species and serves as a popular destination for outdoor enthusiasts.

Managed by the Arizona Department of Water Resources, Ashurst Lake boasts a low hazard potential and a moderate risk assessment rating. The dam's spillway, which is uncontrolled, has a width of 120 feet and serves to manage water levels during periods of high discharge. Despite its moderate risk level, the dam's condition assessment is currently not rated, indicating a need for ongoing monitoring and maintenance to ensure its structural integrity and safety for the surrounding community.

Surrounded by the scenic beauty of the region and fed by the Ashurst Run, Ashurst Lake offers a tranquil retreat for visitors to enjoy fishing, boating, and birdwatching in a natural setting. With its regulated state ownership and commitment to wildlife conservation, Ashurst Lake stands as a testament to the importance of sustainable water resource management in the face of climate change challenges.

Year Completed

1954

Dam Length

707

Dam Height

11.9

River Or Stream

ASHURST RUN

Primary Dam Type

Earth

Surface Area

230

Hydraulic Height

11.9

Drainage Area

1.2

Nid Storage

4164

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

12
       
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.