Sherman Lake Dam Reservoir Report
Nearby: Cardinal Lake Dam Lake Aspen Dam
Last Updated: February 6, 2026
Sherman Lake Dam, located in Marthasville, Missouri, was completed in 1964 and stands at a height of 33 feet.
Summary
The dam serves as a recreational site, offering a surface area of 13 acres and a storage capacity of 230 acre-feet. Charette Creek is the river or stream that the dam controls, with a drainage area of 200 acres.
Despite being privately owned, Sherman Lake Dam has a high hazard potential, although its condition has not been officially rated. The dam's emergency action plan status is unknown, and there is no information available on its risk assessment or management measures. While the dam has not been inspected recently, it remains an important feature for water resource and climate enthusiasts, providing a valuable recreational resource in the area.
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Humidity
15-Day Weather Outlook
Year Completed |
1964 |
Dam Height |
33 |
River Or Stream |
TR CHARETTE CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Drainage Area |
200 |
Nid Storage |
230 |
Structural Height |
33 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
33 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Cuivre River Near Troy
|
18cfs |
Dardenne Creek At Ofallon
|
45cfs |
Dardenne Creek At Old Town St. Peters
|
9cfs |
Bourbeuse River At Union
|
62cfs |
Meramec River At Pacific
|
515cfs |
Kiefer Creek Near Ballwin
|
1cfs |
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.
Sherman Lake Dam