O'Keefe Lake Reservoir Report

Last Updated: December 19, 2025

O'Keefe Lake, located in Ralls County, Missouri, is a privately owned Earth dam structure completed in 1975 for the primary purpose of serving as a Fish and Wildlife Pond.


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Summary

With a dam height of 30 feet and a hydraulic height of 29 feet, this low hazard potential lake offers recreational opportunities while also providing a habitat for wildlife. The lake covers a surface area of 4 acres and has a normal storage capacity of 64 acre-feet.

Managed by the St. Louis District of the US Army Corps of Engineers, O'Keefe Lake is fed by the TR-Salt River and has a drainage area of 85 square miles. The dam, constructed with a stone core and resting on a soil foundation, has a moderate risk assessment rating. Despite not being regulated by the state, the lake's condition is currently not rated, and it lacks an Emergency Action Plan, suggesting the need for further evaluation and management measures to ensure its safety and longevity as a valuable resource for both wildlife and recreation enthusiasts in the area.

Year Completed

1975

Dam Length

580

Dam Height

30

River Or Stream

TR-SALT RIVER

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

29

Drainage Area

85

Nid Storage

96

Structural Height

31

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.