Vineyards Twin Lakes Lower Dam Reservoir Report
Last Updated: December 17, 2025
Vineyards Twin Lakes Lower Dam, located in St.
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Summary
Francois, Missouri, was completed in 1958 and serves as a recreational site for water resource and climate enthusiasts. This private earth dam, with a height of 30 feet and a storage capacity of 209 acre-feet, is nestled along the TR Flat River and covers a surface area of 13 acres. Despite its primary purpose for recreation, the dam is noted to have a high hazard potential, although its condition assessment remains unrated.
With a maximum storage capacity of 209 acre-feet and a normal storage of 140 acre-feet, Vineyards Twin Lakes Lower Dam is a significant feature in the Kansas City District. While the dam's spillway type and spillway width remain unspecified, its association with the TR Flat River provides ample opportunities for water-based activities in the region. Although the dam poses a high hazard potential, its management measures and risk assessments are currently unlisted.
This privately owned dam, located in Elvins, Missouri, offers a serene environment for outdoor enthusiasts to explore the surrounding landscapes and engage in recreational activities. With a history dating back to 1958, Vineyards Twin Lakes Lower Dam continues to be a vital part of the water resource and climate scene in St. Francois County, Missouri.
Year Completed |
1958 |
Dam Height |
30 |
River Or Stream |
TR FLAT RIVER |
Primary Dam Type |
Earth |
Surface Area |
13 |
Drainage Area |
580 |
Nid Storage |
209 |
Structural Height |
30 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
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 Lower Dam