Jaques Reservoir Report

Last Updated: December 5, 2025

Jaques, located in Show Low, Arizona, is a local government-owned dam regulated by the Arizona Department of Water Resources.


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Summary

Built in 1953, this earth dam on Show Low Creek stands at 65 feet high and spans 1970 feet in length, with a storage capacity of 8160 acre-feet. Despite its crucial role in water resource management, Jaques has a high hazard potential and is currently assessed to be in poor condition.

The dam, primarily used for recreation and other purposes, features an uncontrolled spillway with a width of 220 feet. With a drainage area of 65 square miles, Jaques has a moderate risk rating and undergoes inspections at one-year intervals. Although the dam's emergency action plan and risk management measures are currently unspecified, its strategic location and significance in water storage make it a key asset in mitigating climate-related challenges in the region.

For water resource and climate enthusiasts, Jaques serves as a focal point in understanding the intricate balance between infrastructure development and environmental stewardship. With its historical significance and ongoing regulatory oversight, Jaques exemplifies the importance of proactive risk management and maintenance practices in ensuring the resilience of critical water structures against the backdrop of a changing climate.

Year Completed

1953

Dam Length

1970

Dam Height

65

River Or Stream

SHOW LOW CREEK

Primary Dam Type

Earth

Surface Area

186

Drainage Area

65

Nid Storage

8160

Structural Height

81

Hazard Potential

High

Foundations

Rock

Nid Height

81
       
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.