The particular components included in this assembled dataset include: Exposed Seafloor in Atlantic coast Florida waters; Shoals in Biscayne Bay; Undeveloped Coastal Barriers in GA, SC, NC; One-mile buffered Inlets in FL, GA, SC, NC; Nursery Areas of NC; the Gulf Stream off the SE US Atlantic coast.
Geonex digitized the contours during 1991-1992 from clean, wrinkle-free paper National Oceanic and Atmospheric Administration (NOAA) nautical charts. Geonex used the most current versions of the charts available at that time. The source charts used to create this data set varied in scale from 1:10000 to 1:80000, but in all cases, the largest scale charts available were used. Geonex staff members also interpolated additional contours not present on the charts.
This boundary data set was digitized between 4/1/2007 and 5/11/2007 from the official John H. Chafee Coastal Barrier Resources System (CBRS) maps enacted by law. This data set complies with the National Spatial Data Infrastructure (NSDI) and other standards established by the Federal Geographic Data Committee (FGDC). The U.S. Fish and Wildlife Service (FWS) endorses this data set as having been compiled to meet forty feet horizontal accuracy at the ninety-five percent confidence level relative to the boundaries shown on the official CBRS maps. However, these digital boundaries are only representations of the official CBRS boundaries and are not to be considered authoritative. The FWS is not responsible for any misuse or misinterpretation of this digital data set, including use of these boundaries to determine eligibility for federal financial assistance such as federal flood insurance. The official CBRS maps are enacted by Congress and maintained by the FWS. Copies of the official CBRS maps are available for viewing at the FWS national headquarters, regional and field (local) offices, and are also available for download at <http://www.fws.gov/habitatconservation/coastal_barrier.htm>. For an official determination of whether or not an area or specific property is located within the CBRS, or for any questions regarding the CBRS, please contact your local FWS office. Contact information for FWS field offices can be found at <http://www.fws.gov>.