Crowder Lake Dam Reservoir Report
Nearby: Whitt Lake Dam Constable Lake Dam
Last Updated: December 11, 2025
Crowder Lake Dam, located in Mercer County, Missouri, serves as a crucial grade stabilization structure along the TR-Muddy Creek.
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Summary
Built in 1977, this privately owned Earth dam stands at 27 feet in height and spans 450 feet in length, providing storage of up to 87 acre-feet of water. With a low hazard potential and moderate risk assessment, Crowder Lake Dam plays a key role in managing the flow of water in the area, especially during times of heavy rainfall.
Despite its relatively small size, Crowder Lake Dam's significance lies in its ability to stabilize the surrounding terrain and protect against potential flooding events. The dam features an uncontrolled spillway, 18 feet in width, to manage excess water and maintain the structural integrity of the Earth and stone core construction. While not currently rated for condition assessment, the dam continues to fulfill its primary purpose of grade stabilization, contributing to the overall water resource management efforts in the region.
With no federal oversight or regulatory agency involvement, Crowder Lake Dam operates independently under private ownership. The dam's position within the Rock Island District and its close vicinity to the city of Trenton further highlight its importance in maintaining water quality and quantity for the local community. As an integral part of the water infrastructure in Mercer County, Crowder Lake Dam stands as a testament to the critical role of smaller dams in supporting climate resilience and water resource management efforts.
Year Completed |
1977 |
Dam Length |
450 |
Dam Height |
26 |
River Or Stream |
TR-MUDDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
25 |
Drainage Area |
102.4 |
Nid Storage |
87 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
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.
Crowder Lake Dam