Elliot Lake Dam Reservoir Report

Last Updated: December 24, 2025

Elliot Lake Dam in Missouri, completed in 1978, serves primarily for irrigation purposes.


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Summary

This private-owned Earth dam stands at a height of 17 feet and has a storage capacity of 82 acre-feet. Situated on the TR TO COON CREEK, it covers a surface area of 9 acres and drains a 170-acre watershed. Despite being rated as low hazard potential and not yet assessed for its condition, the dam remains a vital water resource infrastructure in the region.

Owned and operated privately, Elliot Lake Dam is not regulated by the state or federal agencies in terms of permitting, inspection, or enforcement. The dam, with a buttress core type and unlisted/unknown foundation, caters to the irrigation needs of the surrounding area. Although its emergency action plan and risk assessment details are not available, the dam's low hazard potential suggests a relatively low-risk profile. The Kansas City District overlooks its maintenance and operations.

For water resource and climate enthusiasts, Elliot Lake Dam presents an intriguing case study in water infrastructure management. With its historical significance dating back to 1978, the dam continues to play a crucial role in supporting irrigation activities in St. Clair, Missouri. While its condition assessment remains pending, the dam's low hazard potential and unregulated status raise questions about its long-term sustainability and resilience in the face of changing climate conditions.

Year Completed

1978

Dam Height

17

River Or Stream

TR TO COON CREEK

Primary Dam Type

Earth

Surface Area

9

Drainage Area

170

Nid Storage

82

Structural Height

17

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

17
       
Seasonal Comparison

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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.