Mallard Lake Dam Reservoir Report

Last Updated: December 6, 2025

Mallard Lake Dam, located in Perry County, Missouri, was completed in 1963 and primarily serves as a recreational site for water enthusiasts.


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Summary

With a height of 24 feet and a storage capacity of 193 acre-feet, the dam is situated on the TR-WHITEWATER RIVER and covers a surface area of 15 acres. Despite its recreational purpose, the dam has been classified as having a high hazard potential, although its condition assessment remains unrated.

The dam is privately owned and not regulated by the state, with no inspection or enforcement protocols in place. The last inspection was conducted in 1979, highlighting potential risks associated with its operation and maintenance. With no emergency action plan in place and a lack of risk assessment and management measures, Mallard Lake Dam presents a significant challenge in terms of ensuring the safety of its surrounding community and the preservation of its water resources in the face of changing climate conditions.

For water resource and climate enthusiasts, Mallard Lake Dam represents a case study in the need for improved oversight and risk management strategies for aging infrastructure. As the dam continues to age without updated inspections or emergency preparedness measures, there is a pressing need for increased attention to its maintenance and safety protocols to mitigate potential hazards and safeguard the surrounding environment.

Year Completed

1963

Dam Height

24

River Or Stream

TR-WHITEWATER RIVER

Primary Dam Type

Earth

Surface Area

15

Drainage Area

1315

Nid Storage

193

Structural Height

24

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

24
       
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.