Brown Lake Dam Reservoir Report
Nearby: Mccowan Dam Roger O'Bannon Irr. Res.
Last Updated: December 18, 2025
Brown Lake Dam, located in Middle Grove, Missouri, is a privately owned earth dam that serves primarily for recreational purposes.
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Summary
Sitting on TR-Milligan Creek, this dam stands at a height of 25 feet and has a storage capacity of 40 acre-feet. With a surface area of 3 acres and a drainage area of 28 square miles, the dam has a low hazard potential and is currently rated as not assessed for condition.
Despite being privately owned, Brown Lake Dam falls under state jurisdiction with no regulatory agency overseeing its operation or enforcement. The dam has not been inspected or assessed for risk and emergency action plans are not prepared. However, with its scenic location and potential for recreation, Brown Lake Dam remains a notable feature in Monroe County, Missouri for water resource and climate enthusiasts to explore and appreciate.
Dam Height |
25 |
River Or Stream |
TR-MILLIGAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
28 |
Nid Storage |
40 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
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.
Brown Lake Dam