STAFFORD COUNTY, Va. – A lake is forming in Stafford County.

It took two years to complete the dam for the Rocky Pen Run Reservoir, and now the 503-acre lake is filling with water.

The largest public works project in Stafford County’s history, the reservoir will hold 5.5 billion gallons of water. It started to fill in January when officials allowed water to flow into the man-made lake bed.

The lake will provide water for the county’s more than 130,000 residents and join two other reservoirs, Abel Lake and Smith Lake.

Rocky Pen Reservoir also be used for fishing, non-motorized boating, and kayaking when it’s completely full.

[Video: Ricky Moorefield]