Trenton Lower Lake Dam Reservoir Report
Last Updated: December 19, 2025
Trenton Lower Lake Dam, located in Grundy County, Missouri, was completed in 1963 for the primary purpose of recreation.
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Summary
The dam, a 20-foot earth structure with a buttress core type, holds a storage capacity of 1314 acre-feet and covers a surface area of 105 acres. The dam is situated on TR MUDDY CREEK and is under the jurisdiction of the Rock Island District of the US Army Corps of Engineers. Despite being privately owned, the dam is not regulated by the state and has not been inspected or rated for its condition since 1979.
With a hazard potential rated as high, the dam poses a risk that has not been thoroughly assessed or managed. Emergency action plans and guidelines for the dam are either outdated or non-existent, raising concerns about the safety and preparedness of the site in case of a potential breach or disaster. The lack of recent inspections and assessments highlights the need for increased vigilance and maintenance of Trenton Lower Lake Dam to ensure the safety of the surrounding community and environment, especially in the face of changing climate patterns and water resource management challenges. Enthusiasts interested in water resource and climate issues should monitor developments related to this important infrastructure to promote responsible stewardship and sustainable practices.
Year Completed |
1963 |
Dam Height |
20 |
River Or Stream |
TR MUDDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
105 |
Drainage Area |
713 |
Nid Storage |
1314 |
Structural Height |
20 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Thompson River At Trenton
|
111cfs |
Medicine Creek Near Laredo
|
6cfs |
Grand River Near Gallatin
|
61cfs |
Grand River At Chillicothe
|
361cfs |
Locust Creek Near Linneus
|
35cfs |
East Fork Big Creek Near Bethany
|
2cfs |
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.
Trenton Lower Lake Dam