Whitt Lake Dam Reservoir Report
Last Updated: December 11, 2025
Whitt Lake Dam, located in Mercer, Missouri, is a privately-owned structure built in 1973 for flood risk reduction along the TR-Weldon River.
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Summary
Standing at a height of 30 feet, the dam has a storage capacity of 80 acre-feet and covers a surface area of 5 acres. The primary purpose of the dam is flood risk reduction, but it also serves other functions such as fire protection, stock or small fish pond, and recreation.
Despite being privately owned, Whitt Lake Dam is not regulated or inspected by the state of Missouri. The dam has a low hazard potential and its condition is currently not rated. With a designer unknown, the dam's core type is buttress and it is primarily made of earth materials. While the dam does not have a spillway, it does have a storage capacity of 80 acre-feet and a drainage area of 150 acres.
Although Whitt Lake Dam may not be a high-profile structure, its role in flood risk reduction and the various purposes it serves make it an essential part of the water resource management in the area. For water resource and climate enthusiasts, understanding the intricacies of this dam and its impact on the local ecosystem and community can provide valuable insights into the interconnectedness of water management and environmental sustainability.
Year Completed |
1973 |
Dam Height |
30 |
River Or Stream |
TR-WELDON RIVER |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
150 |
Nid Storage |
80 |
Structural Height |
30 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Thompson River At Trenton
|
143cfs |
Medicine Creek Near Laredo
|
20cfs |
East Fork Big Creek Near Bethany
|
4cfs |
Thompson River At Davis City
|
22cfs |
Grand River Near Gallatin
|
76cfs |
Locust Creek Near Linneus
|
24cfs |
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.
Whitt Lake Dam