The Maryland Port Administration purchased what is now the Cox Creek site from the U.S. Army Corps of Engineers in 1997 and opened it for the placement of dredged material beginning in 2005. Placement continues today, and the site is currently being expanded to include an adjacent site that was the former Kennecott Copper Refinery. Once completed it will comprise a total of 237 acres.
Importantly for local wildlife fans and bird aficionados, the Cox Creek site includes 126 acres of preserved wetlands, known as Swan Creek. This has become one of the state's top birding spots, as it serves as a resting spot for migratory birds and residents alike.