Wynne Lake Dam Reservoir Report
Last Updated: December 12, 2025
Wynne Lake Dam, located in Grundy, Missouri, is a private-owned structure primarily used for recreation purposes.
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Summary
This Earth dam with a buttress core stands at a height of 25 feet and has a storage capacity of 54-acre feet. The dam overlooks TR-Furnace Creek and covers a surface area of 4 acres within a drainage area of 42 acres.
Despite its low hazard potential, Wynne Lake Dam has not been rated for its condition assessment. The dam does not fall under state regulation or inspection, and there are no associated federal agencies overseeing its operations. Although the dam has not been modified in recent years, its emergency action plan and risk assessment details are not readily available.
For water resource and climate enthusiasts, Wynne Lake Dam offers a unique opportunity for recreational activities in the Trenton area. Its peaceful surroundings and potential for outdoor adventures make it a hidden gem worth exploring in Grundy County, Missouri.
Dam Height |
25 |
River Or Stream |
TR-FURNACE CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
42 |
Nid Storage |
54 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Thompson River At Trenton
|
140cfs |
East Fork Big Creek Near Bethany
|
4cfs |
Grand River Near Gallatin
|
82cfs |
Medicine Creek Near Laredo
|
17cfs |
Grand River At Chillicothe
|
361cfs |
Locust Creek Near Linneus
|
27cfs |
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.
Wynne Lake Dam