PhysZones- Nahant to Gloucester, Physiographic Zones

These data physiographically characterize the seafloor between Nahant and Gloucester Massachusetts from high-resolution geophysical surveys of the seafloor . Approximately 127 km? of the inner shelf were mapped in the nearshore region between the 10m and 40-m isobath. Note: The data were reprojected from their native projection into North American Datum 1983 (NAD83) / Massachusetts State Plane coordinate system, Mainland Zone (Fipszone 2001) meters by the Massachusetts Office of Coastal Zone Management on Oct. 17, 2006.