Vineyards Twin Lakes Upper Dam Reservoir Report
Last Updated: December 17, 2025
Vineyards Twin Lakes Upper Dam, located in St.
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Summary
Francois, Missouri, serves as a vital recreation spot in the area. Built in 1958, this earth dam stands at a height of 29 feet and has a storage capacity of 248 acre-feet. With a surface area of 16 acres and a drainage area of 515 square miles, the dam provides a serene setting for water enthusiasts and nature lovers alike.
Despite its primary purpose for recreation, the dam has a high hazard potential, making it crucial for regular inspections and maintenance. Although the last inspection took place in 1981, the condition assessment remains "Not Rated". The dam's proximity to the TR-Flat River adds to its scenic charm, attracting visitors seeking a peaceful escape in the heart of nature.
As a private-owned structure, Vineyards Twin Lakes Upper Dam stands as a testament to the importance of water resources in enhancing the quality of life for local communities. With its rich history and significant role in providing recreational opportunities, this dam serves as a reminder of the beauty and importance of preserving our water sources for future generations to enjoy.
Year Completed |
1958 |
Dam Height |
29 |
River Or Stream |
TR-FLAT RIVER |
Primary Dam Type |
Earth |
Surface Area |
16 |
Drainage Area |
515 |
Nid Storage |
248 |
Structural Height |
29 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
29 |
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.
Vineyards Twin Lakes Upper Dam