Stoner Lake Dam Reservoir Report

Last Updated: December 12, 2025

Stoner Lake Dam, located in Harrison, Missouri, is a privately owned structure primarily used for recreation.


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Summary

This earth dam stands at a height of 25 feet and has a maximum storage capacity of 54 acre-feet, with a normal storage level of 33 acre-feet. Despite its low hazard potential, the dam has not been rated for its condition assessment.

Situated on TR-Trail Creek, this dam is managed by the Rock Island District of the US Army Corps of Engineers. With no state regulation or permitting required, Stoner Lake Dam provides a tranquil setting for outdoor activities in the Trenton area. Although the dam lacks certain safety measures such as an Emergency Action Plan, its recreational purpose and scenic surroundings make it an attractive destination for water resource and climate enthusiasts to explore and appreciate.

While Stoner Lake Dam may not be a significant engineering marvel, its contribution to the local landscape and water management system should not be overlooked. As water resource and climate enthusiasts visit this site, they can appreciate the peaceful waters of Stoner Lake and the careful balance of recreational enjoyment with environmental stewardship that the dam represents in the heart of Missouri.

Dam Height

25

River Or Stream

TR-TRAIL CREEK

Primary Dam Type

Earth

Surface Area

4

Drainage Area

42

Nid Storage

54

Structural Height

25

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

25
       
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.