Little Reservoir Reservoir Report
Last Updated: December 5, 2025
Little Reservoir, located in Apache County, Arizona, is a private-owned water storage facility primarily used for irrigation purposes.
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Summary
Built in 1921, the earth dam stands at a height of 13.4 feet and has a length of 639 feet, with a storage capacity of 1,128 acre-feet and a surface area of 338.4 acres. The reservoir is regulated by the Arizona Department of Water Resources and is inspected regularly to ensure its structural integrity.
Despite its low hazard potential, Little Reservoir is considered to have a moderate risk level, with a risk assessment rating of 3. The spillway type is uncontrolled, with a width of 10 feet, and the reservoir is situated along the No Wash Creek. The dam is not currently rated for its condition, but regular inspections and risk management measures are in place to mitigate any potential hazards. In the event of an emergency, the reservoir's emergency action plan (EAP) status is not specified, but measures are likely in place to address any unforeseen events.
Located approximately 65 miles from Holbrook, Little Reservoir plays a vital role in supporting irrigation activities in the region and serves as a key water resource for the community. With the Arizona Department of Water Resources overseeing its regulation and maintenance, the reservoir stands as a testament to responsible water management practices in the face of changing climate conditions and growing water demands.
Year Completed |
1921 |
Dam Length |
639 |
Dam Height |
13.4 |
River Or Stream |
NO WASH CREEK |
Primary Dam Type |
Earth |
Surface Area |
338.4 |
Drainage Area |
1 |
Nid Storage |
1128 |
Structural Height |
18 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
18 |
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.
Little Reservoir