Leonard Reservoir Report

Last Updated: December 7, 2025

Leonard,Glen Dam, located in House Springs, Missouri, was completed in 1956 and serves as a recreational spot for water and climate enthusiasts.


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Summary

With a height of 29 feet and a storage capacity of 109 acre-feet, the dam on TR-HEADS CREEK offers opportunities for boating, fishing, and other outdoor activities in its 7-acre surface area. However, its high hazard potential warrants attention and regular inspections.

Despite being privately owned and not regulated by the state, Leonard,Glen Dam poses a potential risk due to its outdated inspection date of September 1978 and lack of a current condition assessment. The dam's buttress earth design and unlisted foundation type are key aspects for water resource experts to consider in evaluating its structural integrity. With no emergency action plan or inundation maps prepared, there is a need for updated risk assessment and management measures to ensure the safety of surrounding communities in case of a breach.

For those interested in water resource management and climate resilience, Leonard,Glen Dam presents a case study in the importance of regular inspections, hazard assessments, and emergency preparedness. As the dam's condition remains unrated and its risk potential classified as high, there is a call for action to address these critical gaps in safety measures. With its location in Jefferson County, Missouri, and the oversight of the Kansas City District of the US Army Corps of Engineers, the dam's future maintenance and monitoring will be crucial in safeguarding both recreational opportunities and the surrounding environment.

Year Completed

1956

Dam Height

29

River Or Stream

TR-HEADS CREEK

Primary Dam Type

Earth

Surface Area

7

Drainage Area

246

Nid Storage

109

Structural Height

29

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

29
       
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.