Occoquan Lower Storage Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateVirginia
CountyFairfax
River/StreamOccoquan River
Coordinates38.68960, -77.26900

Physical Characteristics

Dam TypeGravity
NID Height20 ft
Dam Height20 ft
Dam Length484 ft

Storage & Hydraulics

NID Storage170 acre-ft
Max Storage170 acre-ft
Normal Storage170 acre-ft
Surface Area19 acres
Drainage Area596 sq mi

Ownership & Safety

PurposeWater Supply
OwnerFairfax County Water Authority
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection11/05/2020
Emergency Action PlanYes

Identifiers

NID IDVA153005
Federal IDVA153005
More InfoState Dam Safety Program

Nearby Dams

F.p. Griffith Water Plant Lorton Quarry 0.4 mi Undetermined Upper Occoquan Dam 0.5 mi High F.p. Griffith Water Plant Stormwater Outflow #6 0.8 mi Undetermined Omisol Dam 2.0 mi High Laurel Hill Lake Dam 2.2 mi Undetermined Crosspointe Lake Dam 2.5 mi High Prince William Parkway Regional Swm 3.0 mi High Pohick Creek Dam #1 3.4 mi High Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant 3.6 mi Low Potomac Club Regional Pond Dam 4.3 mi Significant