Scarlett Lake Reservoir Report
Nearby: H-V Reservoir Nelson
Last Updated: December 4, 2025
Scarlett Lake, located in Lyman State Park in Apache County, Arizona, is a private irrigation reservoir with a low hazard potential.
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Summary
Built in 1950, the earth dam stands at 8.5 feet high and spans 1013 feet, with a storage capacity of 212 acre-feet. The lake serves multiple purposes including irrigation, fire protection, stock watering, and small fish pond maintenance.
Managed by the Arizona Department of Water Resources, Scarlett Lake is regulated, permitted, inspected, and enforced by the state agency to ensure its safety and integrity. The spillway of the lake is uncontrolled with a width of 49 feet. The surrounding area covers 74.7 acres and is fed by Coyote Creek, making it a vital water resource for the region. Despite being classified as a moderate risk structure, the lake has not been rated for its condition, but has a scheduled inspection frequency of 5 years.
With its picturesque location and vital role in supporting irrigation and wildlife, Scarlett Lake stands as a testament to sustainable water management practices in Arizona. Water resource and climate enthusiasts can appreciate the efforts put into maintaining this reservoir for the benefit of the local community and ecosystem.
Year Completed |
1950 |
Dam Length |
1013 |
Dam Height |
8.5 |
River Or Stream |
COYOTE CREEK |
Primary Dam Type |
Earth |
Surface Area |
74.7 |
Hydraulic Height |
8.5 |
Nid Storage |
212 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
9 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Scarlett Lake