Evergreen Lake Dam Upper Reservoir Report
Last Updated: December 21, 2025
Evergreen Lake Dam Upper, located in Franklin County, Missouri, was completed in 1963 for the primary purpose of recreation.
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Summary
This earth dam with a buttress core stands at a height of 27 feet and can store up to 87 acre-feet of water. With a normal storage capacity of 44 acre-feet, the dam helps to regulate the flow of water from TR to Winch Creek, covering a surface area of 6 acres within a drainage area of 95 square miles.
Owned privately, Evergreen Lake Dam Upper has not been rated for its condition assessment, but it is classified as having a low hazard potential. Despite not being regulated by the state, the dam serves as a valuable resource for water enthusiasts and climate advocates alike in the Pacific area. With its tranquil surroundings and recreational opportunities, the dam stands as a testament to the harmonious relationship between water resources and the environment.
Year Completed |
1963 |
Dam Height |
27 |
River Or Stream |
TR TO WINCH CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
95 |
Nid Storage |
87 |
Structural Height |
27 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Meramec River At Pacific
|
557cfs |
Big River At Byrnesville
|
176cfs |
Meramec River Near Eureka
|
858cfs |
Bourbeuse River At Union
|
73cfs |
Bonhomme Creek Near Ellisville
|
0cfs |
Kiefer Creek Near Ballwin
|
1cfs |
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.
Evergreen Lake Dam Upper