White Clay Creek State Park is a Delaware state park along White Clay Creek on 3,300 acres (1,335 ha) in New Castle County, Delaware in the United States.The park, often known by its initials W.C.C.S.P., is near the Mason-Dixon Line. North of the park is Pennsylvania's White Clay Creek Preserve. White Clay Creek State Park was opened in 1968 and offers 30 miles (48 km) of nature and fitness trails which are open to hiking and mountain biking through a number of seasonal day-use fee parking lots.
The Mason-Dixon Trail enters the park along a trail from the White Clay Creek Preserve and passes through the preserve on its way towards Newark. A trail map of White Clay Creek State Park is available from the DE State Parks site, as of 6/2009, an updated printed map is available from the park office at 750 Thompson Station Road, Newark, DE.