Lake Waukomis Dam Reservoir Report

Last Updated: December 11, 2025

Lake Waukomis Dam, located in Platte County, Missouri, is a privately-owned structure that serves primarily for recreational purposes.


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Summary

Completed in 1968, this Earth-type dam stands at a height of 68 feet and spans a length of 785 feet, with a maximum storage capacity of 2292 acre-feet. The dam is situated on Tr Line Creek and is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri.

Despite being classified as having a high hazard potential, the condition assessment of Lake Waukomis Dam is rated as satisfactory as of December 2007. Regular inspections occur every two years to ensure the safety and reliability of the structure. The dam's spillway is uncontrolled with a width of 61 feet, and it has a moderate risk assessment rating of 3. With a surface area of 82 acres and a drainage area of 1306 acres, the dam plays a crucial role in managing water resources in the region while providing recreational opportunities for the community.

Year Completed

1968

Dam Length

785

Dam Height

68

River Or Stream

TR LINE CREEK

Primary Dam Type

Earth

Surface Area

82

Drainage Area

1306

Nid Storage

2292

Structural Height

48

Outlet Gates

None

Hazard Potential

High

Foundations

Rock

Nid Height

68
       
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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.