Half-Moon Lake Dam Reservoir Report
Nearby: Hank Pemiscot Bayou Dam
Last Updated: December 5, 2025
Half-Moon Lake Dam, located in Cottonwood Point, Missouri, was completed in 1970 and serves as a private recreational facility for water enthusiasts.
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Summary
The dam, primarily made of earth and buttress core types, stands at a height of 8 feet and has a storage capacity of 77 acre-feet. With a normal storage capacity of 48 acre-feet and a surface area of 18 acres, the dam offers a tranquil setting for activities such as fishing, boating, and wildlife observation.
Despite its low hazard potential and current "Not Rated" condition assessment, Half-Moon Lake Dam provides a vital water resource for the surrounding area. The dam is not regulated by the state and does not have a designated state agency for inspection and enforcement. While there are no associated structures or outlet gates, the dam's location on Half-Moon Bayou Offstream adds to the picturesque landscape and recreational opportunities for visitors.
For water resource and climate enthusiasts, Half-Moon Lake Dam offers a glimpse into the importance of sustainable water management and the role of private owners in maintaining recreational facilities. With its serene surroundings and potential for outdoor activities, the dam serves as a reminder of the interconnectedness between water resources, infrastructure, and environmental conservation in our changing climate.
Year Completed |
1970 |
Dam Height |
8 |
River Or Stream |
HALF-MOON BAYOU OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
18 |
Drainage Area |
20 |
Nid Storage |
77 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
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.
Half-Moon Lake Dam