Dam Safety Coordination

Dam Emergency Action Plan

​Prince George's County Government is the Owner of twenty High Hazard and Significant Hazard Dams within the County, and is responsible for the routine monitoring, inspection, and maintenance of the dams.

​The twenty dams are listed below and each dam has an Emergency Action Plan (EAP) that alert property owners the likelihood of eminent danger and reduces the risk of human life loss and injury and minimizes property damage during an unusual or emergency event.

​Allison Street Levee (Mt. Ranier)

Aragona Village

Ashcroft Drive - Woodbridge Pond

Collington Facility 9

Frost Pond

Hanson Oaks

Henson Creek #17

Heritage Glen

Indian Creek #2

Indian Creek #3

Lake Arbor

Largo Town Center

Laurel Lakes #1

Madison Hill

Summerfield Pond #1

Summerfield Pond #2

Summit Creek South

Tinkers Creek #8

Perrywood Dam (Manor House Drive)

Perrywood Dam (Water Fowl Way)

Emergency Response

​There are three emergency levels.

Emergency Level 1

​This is a non-emergency, unusual event, slowly developing, e.g., the elevation of the dam is rising. Technical representatives/inspectors are sent out to monitor the dam for a potential or imminent dam failure situation.

Emergency Level 2

​Potential dam failure situation, rapidly developing. Technical representatives/inspectors closely monitor the condition of the dam and periodically report the status of the situation to the Dam Operator. If the conditions worsen and dam failure is imminent, the Dam Operator immediately notifies the Emergency Management Director of the change, and if necessary, recommends full or partial activation of the Emergency Operations Center.

Emergency Level 3

​Urgent, dam failure appears to be imminent or in progress. This is an extremely urgent situation when the failure cannot be prevented. The Dam Operator will immediately contact the Emergency Management Director to put plans in place for evacuation of all at risk people, and close all roads that will be affected.

Pre-Event Dam Inspections

​In case a significant storm event is forecast, the Dam Operator will send out qualified technical representatives/inspectors to each dam to monitor the dam performance during the storm event and to advise the Dam Operator should an emergency occur. They will constantly monitor the water surface elevation and report back to the Dam Operator.