Woodcliff Lake Dam Reservoir Report

Last Updated: December 21, 2025

Woodcliff Lake Dam, located in Jefferson County, Missouri, was completed in 1965 and serves as a beloved spot for recreational activities.


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Summary

This private dam, with a height of 25 feet and a storage capacity of 80 acre-feet, is primarily used for leisure purposes, offering a tranquil setting for visitors to enjoy activities such as fishing and boating on the six-acre surface area of the lake. Despite its low hazard potential and unlisted foundation type, Woodcliff Lake Dam has not been rated for its condition assessment.

Situated near the TR to Big River, this earth dam with a buttress core type is not regulated by the state and does not require permits, inspections, or enforcement. With no associated structures and no state jurisdiction over its operations, Woodcliff Lake Dam stands as a testament to the balance of nature and human recreation. As climate and water resource enthusiasts explore the area, they can appreciate the beauty and functionality of this structure, which continues to provide a peaceful retreat for the community of Times Beach.

Although lacking in detailed risk assessment and emergency preparedness measures, Woodcliff Lake Dam remains a popular destination for those seeking a connection to the outdoors. As visitors admire the engineering of the dam and the serenity of the surrounding landscape, they can also reflect on the importance of sustainable water management practices and the impact of climate change on our natural resources. Woodcliff Lake Dam serves as a reminder of the delicate balance between human enjoyment and environmental stewardship in the face of evolving weather patterns and water dynamics.

Year Completed

1965

Dam Height

25

River Or Stream

TR TO BIG RIVER

Primary Dam Type

Earth

Surface Area

6

Drainage Area

150

Nid Storage

80

Structural Height

25

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

25
       
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.