Lake Belle-Ann Dam Reservoir Report
Nearby: Ed Alexander Parker's Dam
Last Updated: December 16, 2025
Lake Belle-Ann Dam, located in Marthasville, Missouri, is a privately owned Earth dam constructed in 1960 for irrigation purposes.
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Summary
With a height of 29 feet and a storage capacity of 93 acre-feet, the dam serves as a vital resource for the surrounding area’s agricultural needs. Despite its importance, the dam has not been rated for its condition and is considered to have a high hazard potential.
The dam, situated on TR College Creek, covers a surface area of 6 acres and has a drainage area of 128 square miles. While it may not be regulated by the state, the dam’s emergency action plan status is unknown, raising concerns about its safety and preparedness for potential disasters. The last inspection of the dam was conducted in 1979, highlighting the need for updated assessments and risk management measures to ensure the safety of the surrounding community and environment.
Lake Belle-Ann Dam’s unique Earth design with Buttress core types showcases its engineering complexity and significance in sustaining irrigation and recreational activities in the region. As climate change continues to impact water resources, it is crucial to prioritize the maintenance and evaluation of such structures to mitigate potential risks and safeguard the water supply for future generations.
Year Completed |
1960 |
Dam Height |
29 |
River Or Stream |
TR COLLEGE CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
128 |
Nid Storage |
93 |
Structural Height |
29 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
29 |
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.
Lake Belle-Ann Dam