Mexican Tank Reservoir Report
Nearby: Jumbo Little Hell's Canyon
Last Updated: December 5, 2025
Mexican Tank, located in Yavapai, Arizona, serves as a private fish and wildlife pond with a primary purpose of providing habitat for aquatic life.
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Summary
Built in 1930, this earth dam structure stands at a height of 27 feet and spans 600 feet in length, holding a storage capacity of 61 acre-feet. Situated along Partridge Canyon and regulated by the Arizona Department of Water Resources, Mexican Tank boasts a surface area of 10 acres and drains an area of 4.6 square miles.
Despite its low hazard potential, Mexican Tank remains a vital resource for fire protection, livestock watering, and supporting small fish populations in the region. With a spillway width of 160 feet and uncontrolled spillway type, the tank has a moderate risk assessment rating. While the last inspection took place in 2011, the structure is deemed to be in good condition and not rated for any significant issues. As a key feature in the local ecosystem, Mexican Tank plays a crucial role in maintaining biodiversity and water availability in the arid landscape of Arizona.
Year Completed |
1930 |
Dam Length |
600 |
Dam Height |
27 |
River Or Stream |
PARTRIDGE CANYON |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
4.6 |
Nid Storage |
61 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Seasonal Comparison
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Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Mexican Tank