Settle Mine Dam #2 Reservoir Report
Last Updated: December 5, 2025
Settle Mine Dam #2, located in Potosi, Missouri, stands as a crucial water resource structure built in 1971 with a primary purpose that extends beyond traditional water management.
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Summary
This rockfill dam, standing at 68 feet tall and stretching over 1600 feet in length, serves as a vital component for the surrounding area's infrastructure. With a storage capacity of 300 acre-feet and a drainage area of 160 square miles, this dam plays a significant role in regulating water flow in the TR-Mine A Breton Creek.
Despite being privately owned, Settle Mine Dam #2 is subject to state regulation and inspection, with the Dam and Reservoir Safety Program overseeing its safety and maintenance. The dam has a high hazard potential but has been assessed as satisfactory in condition, ensuring its reliability in the face of potential emergencies. The last inspection took place in November 2016, with a comprehensive assessment conducted in July 2015 to ensure the dam's continued functionality and safety for the community.
As a key structure in the region, Settle Mine Dam #2 not only provides essential water management services but also contributes to the overall environmental and climate resilience of the area. With its significant storage capacity and strategic location, this dam plays a critical role in safeguarding against potential flood risks and ensuring a stable water supply for the residents of Washington County, Missouri. Its presence highlights the importance of effective dam management in the face of changing climate patterns and increasing water resource challenges.
Year Completed |
1971 |
Dam Length |
1600 |
Dam Height |
68 |
River Or Stream |
TR-MINE A BRETON CREEK |
Primary Dam Type |
Rockfill |
Surface Area |
26 |
Drainage Area |
160 |
Nid Storage |
300 |
Structural Height |
68 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
68 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big River At Irondale
|
27cfs |
Big River Near Richwoods
|
221cfs |
Big River Below Desloge
|
59cfs |
Meramec River Near Sullivan
|
522cfs |
East Fork Black River Nr Lesterville
|
19cfs |
Big River At Byrnesville
|
241cfs |
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.
Settle Mine Dam #2