Evergreen Lakes-Lower Dam Reservoir Report
Last Updated: December 21, 2025
Evergreen Lakes-Lower Dam, located in Franklin County, Missouri, is a private-owned structure primarily designed for recreation.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1963, this earth dam stands at a height of 27 feet and has a storage capacity of 87 acre-feet. With a normal storage of 46 acre-feet and a surface area of 6 acres, this dam is situated on To Winch Creek and is managed by the Kansas City District of the US Army Corps of Engineers. Despite its low hazard potential, the dam's condition remains unrated, and no inspection or regulatory agency has been designated for its oversight.
The dam's purpose as a recreational facility emphasizes the importance of water resource management in mitigating the impacts of climate change and ensuring the safety of surrounding communities. Its location in a picturesque setting in the city of Pacific makes it a popular destination for outdoor enthusiasts and nature lovers. With a drainage area of 140 square miles, the dam plays a crucial role in regulating water flow and providing essential habitat for aquatic ecosystems.
While the dam currently poses a low hazard potential, ongoing monitoring and maintenance will be essential to ensure its long-term stability and safety. The lack of a designated regulatory agency underscores the importance of community engagement and stakeholder involvement in the management of water resources. As climate change continues to pose challenges to water availability and quality, structures like Evergreen Lakes-Lower Dam serve as vital tools in the sustainable management of our precious water resources.
Year Completed |
1963 |
Dam Height |
27 |
River Or Stream |
TO WINCH CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
140 |
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 Lakes-Lower Dam