Sapp Lake Dam Reservoir Report
Last Updated: December 16, 2025
Sapp Lake Dam in Missouri, completed in 1977, serves as a recreational area for water resource and climate enthusiasts.
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Summary
This private-owned Earth dam, with a height of 25 feet and a storage capacity of 80 acre-feet, is located in Boone County near the city of McBaine. The dam is associated with TR-Mill Creek and falls under the jurisdiction of the St. Louis District of the US Army Corps of Engineers.
With a surface area of 6 acres and a drainage area of 87 square miles, Sapp Lake Dam provides a serene and picturesque environment for outdoor activities such as fishing, boating, and wildlife observation. Despite its low hazard potential and not being regulated by the state, the dam's condition assessment remains unrated. The dam does not have a spillway and has not been modified in recent years, indicating a stable and well-maintained structure for visitors to enjoy.
Although the dam's emergency action plan and risk management measures are not readily available, Sapp Lake Dam continues to attract water resource and climate enthusiasts seeking a tranquil escape in the heart of Missouri. With its strategic location and recreational amenities, this dam stands as a testament to the harmonious coexistence of human recreation and environmental conservation in the region.
Year Completed |
1977 |
Dam Height |
25 |
River Or Stream |
TR-MILL CR |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
87 |
Nid Storage |
80 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Hinkson Creek At Columbia
|
1cfs |
Moniteau Creek Near Fayette
|
3cfs |
Missouri River At Boonville
|
30100cfs |
Missouri River At Jefferson City
|
30600cfs |
Moreau River Near Jefferson City
|
30cfs |
Missouri River At Glasgow
|
29300cfs |
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.
Sapp Lake Dam