Lake Manassas is located in Prince William County
Source: ESRI, ArcGIS Online
Lake Manassas was completed in 1969, with a dam blocking the flow of Broad Run. It covers 800 acres and stores 5 billion gallons on water. Just downstream of the dam, the City of Manassas has a 14 million gallon per day (mgd) water treatment plant, and is expanding capacity to 18mgd.1
housing developments are adjacent to Lake Manassas
Source: Historic Prince William, Aerial Photo Survey 2019