Lay Reservoir Report

Last Updated: December 11, 2025

Lay, Ronald Lake Dam is a private earth dam located in Lewis County, Missouri, specifically in the city of Maywood.


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Summary

Completed in 1977, this dam serves primarily for flood risk reduction, but also fulfills purposes such as fire protection, irrigation, and recreation. With a height of 30 feet and a storage capacity of 80 acre-feet, this low hazard potential dam has not been rated for its condition assessment.

Situated along the Middle Fabius River, Lay, Ronald Lake Dam provides essential water resource management for the surrounding area. Owned privately, this dam does not fall under state jurisdiction and is not regulated, inspected, or enforced by any state agency. The dam's location and purpose make it a vital structure for maintaining water levels, protecting against floods, and supporting various recreational activities for the local community.

Despite its low hazard potential and lack of recent inspection data, Lay, Ronald Lake Dam remains an important infrastructure for flood risk reduction and water resource management in Lewis County, Missouri. With its completion in 1977, this earth dam continues to play a crucial role in maintaining water levels and supporting various purposes such as irrigation and recreation. As a key structure along the Middle Fabius River, this dam serves as a testament to the importance of effective water management in mitigating natural disasters and ensuring sustainable water resources for the region.

Year Completed

1977

Dam Height

30

River Or Stream

TR-MIDDLE FABIUS RIVER

Primary Dam Type

Earth

Surface Area

5

Drainage Area

30

Nid Storage

80

Structural Height

30

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

30
       
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.