Mercer Co Washington Twp #5 Reservoir Report
Nearby: Constable Lake Dam Akers Lake Dam
Last Updated: December 12, 2025
Mercer CO Washington Twp #5 is a captivating earth dam located in Mercer County, Missouri, specifically in Trenton.
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Summary
Completed in 1983, this dam serves the primary purpose of grade stabilization along the TR-Muddy Creek. With a height of 31 feet and a length of 600 feet, it provides a storage capacity of 30 acre-feet and covers a surface area of 32 acres. The dam's low hazard potential and not rated condition assessment make it an essential structure for water resource management in the region.
Despite the lack of regulatory oversight from the state, Mercer CO Washington Twp #5 plays a crucial role in managing the water resources in the area, with a maximum discharge capacity of 63 cubic feet per second. The dam's design includes stone core types on a soil foundation, ensuring its structural integrity. While the dam does not feature a spillway, it remains a key infrastructure for protecting the surrounding area from potential flooding events. Overall, this earth dam stands as a testament to effective grade stabilization and water management practices in the region.
With Congressman Sam Graves (R) representing the area in the US House of Representatives, the earth dam at Mercer CO Washington Twp #5 continues to be a focal point for climate and water resource enthusiasts. Its risk assessment of high (2) highlights the importance of ongoing monitoring and maintenance to ensure its continued effectiveness. As a local government-owned structure, this dam showcases the partnership between communities and authorities in safeguarding against potential water-related risks and enhancing overall resilience in the face of changing climate patterns.
Year Completed |
1983 |
Dam Length |
600 |
Dam Height |
31 |
River Or Stream |
TR-MUDDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
32 |
Hydraulic Height |
31 |
Drainage Area |
260 |
Nid Storage |
30 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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 |
Locust Creek Near Linneus
|
24cfs |
Grand River Near Gallatin
|
76cfs |
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.
Mercer Co Washington Twp #5