Mar-Kay Lake Dam Reservoir Report
Nearby: Henley Lake Dam Lake Carmel Dam
Last Updated: December 5, 2025
Mar-Kay Lake Dam, located in Hickory Hill, Missouri, stands as a crucial structure for irrigation and recreation purposes.
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Summary
Built in 1970, this earth dam with a height of 20 feet provides a maximum storage capacity of 86 acre-feet, with a normal storage of 40 acre-feet. Situated on the TR BOIS BRULE CREEK, the dam covers a surface area of 8 acres and serves a drainage area of 110 acres.
Despite being privately owned and not regulated by the state, Mar-Kay Lake Dam is classified as having high hazard potential. With a condition assessment of "not rated," the dam's emergency action plan status and risk management measures remain unclear. The dam's spillway type, outlet gates, and inspection frequency are also not specified in the available data.
For water resource and climate enthusiasts, Mar-Kay Lake Dam presents an intriguing case study in dam infrastructure management and emergency preparedness. The lack of detailed information on its condition assessment and risk management highlights the importance of regular inspections and maintenance for ensuring the safety and functionality of such vital water structures. As efforts continue to monitor and assess the risks associated with high-hazard dams like Mar-Kay Lake Dam, there is a need for increased transparency and accountability in the maintenance and operation of these critical water resources.
Year Completed |
1970 |
Dam Height |
20 |
River Or Stream |
TR BOIS BRULE CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
110 |
Nid Storage |
86 |
Structural Height |
20 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Osage River Below St. Thomas
|
1450cfs |
Moreau River Near Jefferson City
|
111cfs |
Missouri River At Jefferson City
|
37000cfs |
Maries River At Westphalia
|
21cfs |
Osage River Near Bagnell
|
1020cfs |
Gasconade River Near Rich Fountain
|
1030cfs |
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.
Mar-Kay Lake Dam