Bathymetric Contours

This layer contains bathymetric contours which provide the size, shape and distribution of underwater features. The contours are from zero to -100m with a contour every 10 meters, a -101m to -500m with contours every 25meters, and -501m+ with contours every 100m until all contours had been created for the DEM utilized. The DEM utilized was the Global Multi-Resolution Topography (GMRT) Synthesis which is a multi-resolution gridded global Digital Elevation Model (DEM) that includes cleaned processed ship-based multibeam sonar data at their full spatial resolution (~100m in the deep sea). This dataset has been projected into World Mercator.

To support coastal and ocean planning and other activities pursuant to the Energy Policy Act, Coastal Zone Management Act, Magnuson-Stevens Fishery Conservation and Management Act, National Environmental Policy Act, Rivers and Harbors Act and the Submerged Lands Act. This feature class represents contours of elevation under the water's surface known as Bathymetry Contours. This feature class contains contours from zero to -100m with a contour every 10 meters, a -101m to -500m with contours every 25 meters, and -501m+ with contours every 100m until all contours had been created for the utilized DEM.

The native coordinate system for this layer is WGS 1984 World Mercator (ESPG: 3395). Please note: all MarineCadastre.gov data served by the NOAA Office for Coastal Management and hosted through Esri REST services are in the WGS 1984 Web Mercator Auxiliary Sphere (EPSG: 3857) projection.

NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided "as is" without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation. https://www.marinecadastre.gov/about/disclaimer.html

These data are intended for coastal and ocean use planning. Not for navigation. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. https://www.marinecadastre.gov/about/disclaimer.html.

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.1.5713

No formal attribute accuracy test was conducted. The attributes in this dataset are believed to be accurate.

Maximum scale of intended use is 1:80,000.

Spatial and attribute properties are believed to be complete, although attribute information has been simplified. Geometric thresholds from original data are preserved. No tests have been completed for exhaustiveness.

These data are believed to be logically consistent. Geometry is topologically clean. During quality control, attributes were checked to ensure that they fell within the expected ranges or had expected/valid values. Text attribute values were checked for spelling and usage consistency. No topology tests were conducted.