Mills Lake Dam Reservoir Report
Nearby: Limerick Lake Dam Woodrail Lake Dam
Last Updated: March 4, 2026
Mills Lake Dam in Columbia, Missouri, constructed in 1947, serves multiple purposes including fire protection, stock, and small fish pond, as well as recreational activities.
Summary
The earth dam with a height of 30 feet and a storage capacity of 48 acre-feet is located on the TR-Hinkson Creek, within the St. Louis District of the US Army Corps of Engineers. Despite being privately owned, the dam has a high hazard potential, although its condition assessment is currently not rated.
While the dam has not been inspected recently, it is crucial to ensure its integrity and safety, especially considering its high hazard potential. With a storage capacity of 48 acre-feet and a surface area of 3 acres, Mills Lake Dam plays a significant role in fire protection, stock maintenance, and recreational activities in the area. However, without recent inspection data and a condition assessment, it is important for the private owner to prioritize the safety and maintenance of this critical water resource infrastructure.
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15-Day Weather Outlook
Year Completed |
1947 |
Dam Height |
30 |
River Or Stream |
TR-HINKSON CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
12 |
Nid Storage |
48 |
Structural Height |
30 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
Mills Lake Dam