Mckinley Reservoir Dam Reservoir Report
Nearby: Chaney Lake Dam Botts Lake Dam
Last Updated: December 22, 2025
Located in Arkansas, the Mckinley Reservoir Dam was completed in 1967 and serves primarily for irrigation purposes.
°F
°F
mph
Wind
%
Humidity
Summary
Designed by the USDA NRCS, this private-owned Earth dam stands at 15 feet in height with a hydraulic height of 12 feet and a length of 3126 feet. The reservoir has a storage capacity of 1068 acre-feet, with a normal storage level of 768 acre-feet and covers a surface area of 75.4 acres. The dam is situated on the Mill Bayou-OS river/stream and is under the jurisdiction of the Vicksburg District.
With a low hazard potential and a condition assessment of "Not Rated," the Mckinley Reservoir Dam has not been inspected recently and lacks an Emergency Action Plan (EAP). Despite these shortcomings, the dam has not undergone any modifications since its completion. The surrounding area has not been mapped for potential inundation risks, and there is a lack of updated emergency contacts and risk management measures in place. While the dam serves a crucial role in irrigation, its overall safety and emergency preparedness protocols require improvement to ensure the protection of downstream communities in the event of a dam failure.
Year Completed |
1967 |
Dam Length |
3126 |
Dam Height |
15 |
River Or Stream |
MILL BAYOU-OS |
Primary Dam Type |
Earth |
Surface Area |
75.4 |
Hydraulic Height |
12 |
Drainage Area |
2.45 |
Nid Storage |
1068 |
Structural Height |
15 |
Hazard Potential |
Low |
Nid Height |
15 |
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.
Mckinley Reservoir Dam