Widewater State Park is a state park on a 1,100 acres (450 ha) peninsula in the Potomac River in Stafford County, Virginia. It and Leesylvania State Park to the north on Occoquan Bay, and several wildlife refuges and regional parks are on the Captain John Smith Chesapeake National Historic Trail. Current facilities include a visitor center and staff building along Aquia Creek, as well as picnic shelters, children's play areas and canoe launches on both sides of the peninsula and a soft boat launch and campgrounds.