Collington Life Care Center Lake Reservoir Report

Last Updated: December 5, 2025

Collington Life Care Center Lake, located in Lake Arbor, Maryland, is a privately owned earth dam completed in 1986 with a primary purpose of flood risk reduction.


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Summary

With a dam height of 25 feet and a length of 400 feet, this structure has a normal storage capacity of 30 acre-feet and covers a surface area of 6 acres. The dam is regulated by the Maryland Dam Safety agency and undergoes regular inspections to ensure its safety and compliance with state regulations.

The lake is situated along the Patuxent River West Branch-TR and is part of the Baltimore District of the US Army Corps of Engineers. Despite its low hazard potential, the dam is equipped with an uncontrolled spillway and has a moderate risk assessment rating of 3. While the condition of the dam is currently not rated, it is important for water resource and climate enthusiasts to recognize the vital role that this structure plays in mitigating flood risks and providing recreational opportunities for the local community.

As an integral part of the local watershed, Collington Life Care Center Lake serves as a critical piece of infrastructure in managing water resources in Prince George's County, Maryland. Its strategic location and design not only contribute to flood risk reduction but also offer a space for recreation and environmental conservation. With ongoing state oversight and inspections, this dam exemplifies the intersection of water resource management and climate resilience, making it a noteworthy site for enthusiasts interested in sustainable water infrastructure.

Year Completed

1986

Dam Length

400

Dam Height

25

River Or Stream

Patuxent River West Branch-TR

Primary Dam Type

Earth

Surface Area

6

Drainage Area

0.36

Nid Storage

120

Hazard Potential

Low

Foundations

Soil

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.