Cedar Lake Dam Reservoir Report

Last Updated: December 20, 2025

Cedar Lake Dam, located in St.


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Summary

Charles, Missouri, is a privately owned structure regulated by the state's Dam and Reservoir Safety Program. The dam, designed by BAX Engineer, is classified as an Earth dam with a height of 36 feet and a hydraulic height of 36.8 feet. It serves the purpose of regulating water flow in the Duname Tributary of the Missouri River, with a drainage area of 74.5 square miles and a storage capacity of 31 acre-feet.

Despite its significant hazard potential, Cedar Lake Dam is in satisfactory condition according to a 2014 assessment. The dam has a spillway width of 3 feet and a surface area of 2.5 acres, providing essential water management for the surrounding area. The last inspection in 2013 revealed a need for inspections every 5 years, ensuring the dam's continued safety and function. With its strategic location and vital role in water resource management, Cedar Lake Dam remains a key infrastructure for climate enthusiasts and water resource professionals to monitor and study.

Dam Length

26

Dam Height

36

River Or Stream

DUNAME TRIB-MISSOURI

Primary Dam Type

Earth

Surface Area

2.5

Hydraulic Height

36.8

Drainage Area

74.5

Nid Storage

31

Structural Height

36

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

37
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.