The Deptford culture (2500—1900 BCE) was the first existence of the Woodland tradition in Florida. Mainly a coastal occupation though some people located inland. Ceramics were decorated and stamped. Pottery no longer tempered with plant fibers is used in favor of clay or sand pastes. East of the Aucilla River, the Deptford culture people transition directly into the Fort Walton Culture. The 2001 Letchworth Auger Survey shows no activity at the Letchworth site in Jefferson County, Florida. Sites along the coastal areas are low in numbers where many more recent sites are inland which may be in part related to the rise in sea level that probably inundated many sites. It is estimated that sea level on the Gulf of Mexico coast of northern Florida had risen 2 m (6.5 ft) over the last 2000 years.