Apex Lake Dam Reservoir Report
Nearby: Murphey Lake Dam Miller Lake Dam
Last Updated: December 5, 2025
Apex Lake Dam, located in Maries County, Missouri, is a privately owned structure primarily used for recreation purposes.
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Summary
The dam, classified as an Earth type with a Buttress core, stands at a height of 30 feet and has a storage capacity of 64 acre-feet. The reservoir created by the dam covers a surface area of 4 acres and drains an area of 170 square miles, with a low hazard potential.
Despite being privately owned, Apex Lake Dam is not regulated by the state and does not require permitting, inspection, or enforcement. The dam is situated along the TR to Doyle Creek, within the jurisdiction of Hayden city. While the dam's condition is currently not rated, it poses a low risk according to the available data.
For water resource and climate enthusiasts, Apex Lake Dam offers a unique opportunity to explore a lesser-known recreational spot in Missouri. With its serene surroundings and potential for outdoor activities, the dam serves as a reminder of the diverse water infrastructure present across the state. Although its history and construction details remain unspecified, the dam's low hazard potential and peaceful setting make it an intriguing destination worth discovering for those interested in water management and environmental conservation.
Dam Height |
30 |
River Or Stream |
TR TO DOYLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
170 |
Nid Storage |
64 |
Structural Height |
30 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Gasconade River At Jerome
|
944cfs |
Little Piney Creek At Newburg
|
82cfs |
Bourbeuse River Near High Gate
|
2cfs |
Gasconade River Near Rich Fountain
|
1030cfs |
Maries River At Westphalia
|
21cfs |
Big Piney Below Ft. Leonard Wood
|
297cfs |
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.
Apex Lake Dam