Brown Farm Lake Dam Reservoir Report

Last Updated: December 7, 2025

Brown Farm Lake Dam, also known as Brown's Lake, is a privately owned structure located in Knox County, Missouri, near the city of Hannibal.


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Summary

Completed in 1979, this earth dam stands at a height of 25 feet and serves primarily as a fish and wildlife pond. With a normal storage capacity of 74 acre-feet and a maximum storage of 101 acre-feet, the dam covers a surface area of 8.81 acres and is situated on the TR-Rock Creek.

Although not regulated by the state, Brown Farm Lake Dam has a low hazard potential and a moderate risk assessment rating. Its uncontrolled spillway, with a width of 10 feet, helps manage a maximum discharge of 25 cubic feet per second. The dam's purpose extends beyond just fish and wildlife conservation, also serving fire protection, stock maintenance, grade stabilization, and recreational activities for enthusiasts of water resources and climate.

With its serene setting and essential role in supporting local ecosystems, Brown Farm Lake Dam stands as a testament to the intersection of human infrastructure and environmental conservation efforts. Its presence along TR-Rock Creek provides a vital resource for the community, showcasing the importance of responsible dam management in sustaining both human needs and ecological balance in the region.

Year Completed

1979

Dam Length

450

Dam Height

25

River Or Stream

TR-ROCK CREEK

Primary Dam Type

Earth

Surface Area

8.81

Hydraulic Height

24

Drainage Area

192

Nid Storage

101

Structural Height

26

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.