Casey Lake Dam Reservoir Report

Last Updated: December 7, 2025

Casey Lake Dam, located in Morse Mill, Missouri, is a privately owned structure that serves as a critical component for the management of tailings.


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Summary

Built in 1957, this rockfill dam stands at 56 feet tall and spans a length of 1550 feet, with a storage capacity of 120 acre-feet. The dam is situated on TR-OLD MINES CREEK and is regulated by the DAM AND RESERVOIR SAFETY PROGRAM, ensuring regular inspections and enforcement of safety measures.

Despite its satisfactory condition assessment, Casey Lake Dam has been assigned a high hazard potential due to its location and structural characteristics. The dam features an uncontrolled spillway with a width of 32 feet, and a maximum discharge capacity of 735 cubic feet per second. While the risk assessment categorizes the dam as moderate, with a score of 3, ongoing risk management measures and monitoring are essential to prevent any potential emergencies and ensure the safety of downstream communities.

With its historical significance and important role in water resource management, Casey Lake Dam stands as a testament to the engineering prowess of the past. As water resource and climate enthusiasts, understanding the complexities and challenges associated with dam infrastructure is crucial for safeguarding our environment and communities. By staying informed and advocating for responsible dam maintenance and management, we can ensure the longevity and safety of critical water infrastructure like Casey Lake Dam for future generations.

Year Completed

1957

Dam Length

1550

Dam Height

56

River Or Stream

TR-OLD MINES CREEK

Primary Dam Type

Rockfill

Surface Area

6

Drainage Area

100

Nid Storage

120

Structural Height

57

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

57
       
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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.