Lake Jenkins Reservoir Report

Last Updated: December 5, 2025

Lake Jenkins is a picturesque reservoir located in Woodmont, Maryland, with a primary purpose of recreation.


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Summary

Built in 1936 by designer E.T. Andrews, this earth dam stands at a height of 35 feet and stretches 170 feet in length, providing a storage capacity of 43 acre-feet. The dam overlooks the Potomac River-TR and boasts a surface area of 3.7 acres, making it a popular spot for water resource and climate enthusiasts to explore.

Despite its low hazard potential, Lake Jenkins has been rated as having poor condition, with its last inspection date recorded in October 2018. The dam's emergency action plan status remains unprepared, but with a moderate risk assessment rating of 3, there is room for improvement in risk management measures. With its serene surroundings and recreational opportunities, Lake Jenkins serves as a reminder of the importance of maintaining and monitoring water resources for both ecological and community well-being.

Year Completed

1936

Dam Length

170

Dam Height

35

River Or Stream

Potomac River-TR

Primary Dam Type

Earth

Surface Area

3.7

Drainage Area

3.1

Nid Storage

43

Outlet Gates

Needle - 0

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

35
       
Seasonal Comparison

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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.