Evans Lake Dam Reservoir Report
Last Updated: December 11, 2025
Evans Lake Dam, located in Clark County, Missouri, was completed in 1975 and serves multiple purposes including fire protection, stock, and small fish pond.
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Summary
The dam, primarily owned by a private entity, stands at a height of 25 feet and has a storage capacity of 67 acre-feet. Situated on the TR-Little Wyconda River, the dam is classified as an earth dam with a buttress core type.
Despite being privately owned, Evans Lake Dam is not regulated or inspected by the state, and has a low hazard potential. The dam has not been rated for its condition, and the last inspection took place in September 1990. With no emergency action plan in place, the dam's risk assessment and management measures remain unknown. The dam does not fall under the jurisdiction of the US Army Corps of Engineers.
For water resource and climate enthusiasts, Evans Lake Dam presents an intriguing case study of a privately owned structure with multiple functions in a rural setting. With limited information available on its current condition and risk assessment, the dam raises questions about the importance of proper maintenance and oversight for ensuring the safety and sustainability of such vital water resources. Further research and monitoring are needed to assess the long-term viability of Evans Lake Dam in the face of changing climate conditions and potential hazards.
Year Completed |
1975 |
Dam Height |
25 |
River Or Stream |
TR-LITTLE WYACONDA RIVER |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
32 |
Nid Storage |
67 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Fox River At Wayland
|
8cfs |
Des Moines River At St. Francisville
|
1620cfs |
Wyaconda River Above Canton
|
13cfs |
Bear Creek Near Marcelline
|
5cfs |
Des Moines River At Keosauqua
|
1800cfs |
South Fabius River Near Taylor
|
12cfs |
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.
Evans Lake Dam