Mcallister Elvin Reservoir Report
Nearby: Davis Bud Clinton-Sherman Reservoir
Last Updated: December 21, 2025
Mcallister Elvin, located in Dill City, Oklahoma, is a vital water resource managed by the local government with regulatory oversight from the Oklahoma Water Resources Board.
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Summary
Built in 1982 by the USDA NRCS, this earth dam on Little Elk Creek serves various purposes, including flood control and water storage. With a height of 23 feet and a storage capacity of 149 acre-feet, the dam plays a crucial role in managing water flow and protecting the surrounding area from potential hazards.
Despite being categorized as a low hazard potential structure, Mcallister Elvin is subjected to regular inspections to ensure its structural integrity and functionality. The dam features a controlled spillway, one valve outlet gate, and a drainage area of 1.7 square miles. The risk assessment for this dam is rated as very high, highlighting the importance of proactive risk management measures and emergency preparedness. With its impact on the local watershed and community, Mcallister Elvin stands as a key asset in water resource management in Washita County, Oklahoma.
In the event of an emergency, the presence of Mcallister Elvin provides a crucial line of defense against potential flooding and water-related risks in the region. With its historical significance dating back to 1982 and ongoing commitment to regulatory compliance, this earth dam remains a cornerstone in safeguarding the environment and ensuring sustainable water resource management in the area. For water resource and climate enthusiasts, Mcallister Elvin serves as a fascinating example of human intervention in preserving natural resources and mitigating water-related challenges.
Year Completed |
1982 |
Dam Length |
380 |
Dam Height |
23 |
River Or Stream |
LITTLE ELK CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
23 |
Drainage Area |
1.7 |
Nid Storage |
149 |
Structural Height |
23 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
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.
Mcallister Elvin