Brantley Dam Reservoir Report
Last Updated: December 12, 2025
Brantley Dam, located in Mercer, Missouri, was completed in 1992 and serves as a crucial water resource for fire protection, stock, and small fish pond purposes.
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Summary
Owned privately, the dam stands at a height of 17 feet with a storage capacity of 109 acre-feet. Despite its low hazard potential, the dam's condition assessment remains unrated, highlighting the need for further inspection and maintenance.
Situated on the tributary of Little Medicine Creek, Brantley Dam is managed by the Rock Island District and falls under the jurisdiction of the state of Missouri. With a surface area of 16 acres, the dam plays a vital role in maintaining water levels for various purposes in the region. Although not regulated by the state, the dam's emergency action plan status, risk assessment, and inundation maps preparedness remain unknown, posing potential challenges in case of emergencies.
For water resource and climate enthusiasts, Brantley Dam presents an intriguing case study of a privately owned earth dam that fulfills essential functions in a rural setting. As the debate around water management and climate resilience intensifies, Brantley Dam offers valuable insights into the operation, maintenance, and future planning of small-scale water infrastructure in the face of changing environmental conditions.
Year Completed |
1992 |
Dam Height |
17 |
River Or Stream |
TRIB LITTLE MEDICINE CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Nid Storage |
109 |
Structural Height |
17 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
17 |
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.
Brantley Dam