Wilson Lake Dam Reservoir Report
Nearby: Kleffner Lake Dam Blake Lake Dam
Last Updated: December 5, 2025
Wilson Lake Dam, located in Maries County, Missouri, serves as a vital water resource for the area.
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Summary
Completed in 1977, this earth dam stands at a height of 30 feet and has a maximum storage capacity of 50 acre-feet. The primary purpose of the dam is to create a Fish and Wildlife Pond, while also serving secondary purposes such as fire protection, stock, or small fish pond, and recreation.
With a low hazard potential and a moderate risk assessment, Wilson Lake Dam plays a crucial role in managing water resources and providing opportunities for outdoor activities in the region. The dam has a spillway width of 10 feet and a drainage area of 160 acres, ensuring the efficient regulation of water levels and flow rates. Despite not being state-regulated or regularly inspected, the dam's structural integrity and condition remain ungraded, highlighting the need for ongoing monitoring and maintenance to ensure its continued safety and functionality for the surrounding community.
Overall, Wilson Lake Dam serves as a key feature in the local landscape, offering a balance between water management, recreational opportunities, and environmental conservation. Its presence along the TR-Little Maries River contributes to the region's biodiversity and provides a tranquil setting for wildlife and visitors alike. As a privately owned structure, the dam represents a collaborative effort to steward water resources responsibly and sustainably in Maries County, Missouri.
Year Completed |
1977 |
Dam Length |
400 |
Dam Height |
30 |
River Or Stream |
TR-LITTLE MARIES RIVER |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
29 |
Drainage Area |
160 |
Nid Storage |
50 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Gasconade River At Jerome
|
944cfs |
Osage River Below St. Thomas
|
1450cfs |
Maries River At Westphalia
|
21cfs |
Little Piney Creek At Newburg
|
82cfs |
Gasconade River Near Rich Fountain
|
1030cfs |
Moreau River Near Jefferson City
|
111cfs |
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.
Wilson Lake Dam