The National Marine Sanctuary Program manages a system of sanctuaries and other managed areas around the country. The legal boundaries of Thesee sanctuaries are defined within the Code of Federal Regulations, at 15 C.F.R. Part 922 and the subparts for each national marine sanctuary. The GIS compatible digital boundary files for each national marine sanctuary are representations of those legal boundaries and are based on the best available data. Thesee files are available for public use at locations defined in this metadata record.
Thesee GIS compatible digital files are provided to promote an understanding of the boundaries of each national marine sanctuary. They are based on the legal definition of each sanctuary as defined in the Code of Federal Regulations, at 15 C.F.R. Part 922 and the subparts for each national marine sanctuary. Thesee digital files are not intended and should not be relied upon for use in navigation or legal purposes. For legal questions relating to the digital files, please contact the NMSP at the information provided in this metadata record.
200412
NOT FOR LEGAL USE
N/ORM-62, SSMC-4
1305 East West Highway
Attributes were standardized by feature type (point, line, and polygon) across all sanctuary boundaries. The values recorded for each attribute were quality assured and believed to be accurate.
The data were topologically cleaned.
Where possible, the entire boundary for the sanctuary is represented by this digital file.
Positional accuracy will vary depending on source
Positional accuracy will vary
All information in Coastal Maps is derived from the Source Nautical Chart.
The depicted shoreline of the sanctuary boundary was derived in part from information contained within the CFR.
The geographic boundary coordinates listed within the United States Code of Federal Regulations (CFR) were converted to decimal degrees and a text file was created. A point coverage was then generated using ArcInfo GIS. The coverage was projected into the Geographic Coordinate System and overlaid on large scale nautical charts and analyzed with additional data such as adjacent sanctuaries and shorelines. Specific attention was given to analysis of inconsistencies between textual descriptions and listed coordinates. The polyline files were created using a combination of the coordinate list from the CFR and applicable shoreline vector files. For point files, two methods were used. If the sanctuary had a shoreline component, a polyline to point script was used to create a point for each vertice. If a shoreline component was not present, then the original coordinates from the CFR were used to create a point shapefile. Polygon files were created by converting polylines to polygons. For more detailed process description, please use contact information below.
N/ORM-2, SSMC-4, #11542
1305 East West Highway
Internal feature number.
ESRI
Feature geometry.
ESRI
Acronym for National Marine Sanctuary
National Marine Sanctuary Program
The geometric model from which the geographic coordinate system is defined. For the Sanctuary boundaries, the datum used is NAD83, or in the case of Fagatele Bay, WGS84
Polygon identification - the unique identifier for each polygon
Coastal Services Center
area calculated in statute miles
name of specific areas within a sanctuary, or in cases where there are no area names, the name of the sanctuary
area calculated in square kilometers
area calculated in square nautical miles
N/ORM-62, SSMC-4
1305 East West Highway
Users must assume responisibility to determine the appropriate use of Thesee data. These boundaries are not to be used as LEGAL definitions. The boundaries are created with the most recent and accurate boundary information available, but the edges and/or borders of the boundaries may change due to the natural land changes, site boundary modification or higher resolution maps. Therefore, the currency or accuracy of Thesee boundaries cannot be guaranteed.
Monitor National Marine Sanctuary Digital Boundary File (mnms_py.shp) Digital boundry files are available for public consumption from the National Marine Sanctuary Program through their internet site. Because URL addresses and pages change, the actual data URL is not listed here, but will be searchable within the site (http://sanctuaries.noaa.gov) Requests may also be made through the NMSP Boundary Coordinator. See Distributor Contact Information for contact details.
N/ORM62, SSMC-4
1305 East West Highway