Leaky Lake Dam Reservoir Report

Last Updated: December 11, 2025

Leaky Lake Dam, located in Washington, Missouri, is a private Earth dam primarily used for recreation purposes.


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Summary

With a height of 34 feet and a storage capacity of 200 acre-feet, this dam is situated on a tributary to St. Johns River. Despite being state-regulated, Leaky Lake Dam has not undergone recent inspections or condition assessments, and its hazard potential is deemed low.

The dam, managed by a private owner, is categorized as a Buttress dam and covers a surface area of 11 acres. Although it has not been modified in recent years, its emergency action plan status remains unknown. The surrounding area has a drainage area of 180 acres, with a normal storage capacity of 120 acre-feet. While the dam is not considered a high-risk structure, its condition assessment has not been rated, indicating a need for further evaluation and maintenance to ensure safety and longevity.

For water resource and climate enthusiasts, Leaky Lake Dam presents an intriguing case study of a privately-owned recreational dam with limited regulatory oversight. Its location in Franklin County, Missouri, offers a unique opportunity to explore the intersection of dam management, environmental conservation, and public safety. With its low hazard potential and unassessed condition, this dam serves as a reminder of the importance of regular inspections and maintenance to prevent potential risks and ensure the sustainable use of water resources in the region.

Dam Height

34

River Or Stream

TRIB TO ST. JOHNS

Primary Dam Type

Earth

Surface Area

11

Drainage Area

180

Nid Storage

200

Structural Height

34

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

34
       
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.