Concho Springs Reservoir Report

Last Updated: December 5, 2025

Concho Springs, also known as Concho Lake, is a privately owned water resource located in Apache County, Arizona.


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Summary

Managed by the USDA NRCS, this site serves primarily for irrigation purposes but also offers recreational opportunities. The dam, completed in 1927, stands at a height of 24 feet and has a length of 310 feet, creating a storage capacity of 1560 acre-feet with a normal storage level of 1198 acre-feet.

Situated in the scenic city of Concho, the dam's uncontrolled spillway has a width of 50 feet and a maximum discharge capacity of 625 cubic feet per second. With a drainage area of 7.04 square miles, Concho Springs provides crucial water resources for the surrounding area. Although rated as having a significant hazard potential, the dam's condition assessment remains unrated, emphasizing the importance of regular inspections to ensure its safety and reliability for the community.

Protected and regulated by the Arizona Department of Water Resources, Concho Springs exemplifies the balance between water resource management for agricultural purposes and recreational activities. As a vital infrastructure in the region, its risk assessment of moderate level underscores the need for continuous risk management measures to safeguard this valuable water source and mitigate potential hazards. For water resource and climate enthusiasts, Concho Springs offers a fascinating glimpse into the intersection of human engineering and natural resource utilization in a picturesque setting.

Year Completed

1927

Dam Length

310

Dam Height

24

River Or Stream

CONCHO SPRINGS

Primary Dam Type

Rockfill

Surface Area

155

Drainage Area

7.04

Nid Storage

1560

Structural Height

26

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Foundations

Rock

Nid Height

26
       
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.