Offshore Bathymetry (1:250,000)
- This datalayer represents bathymetry data - seafloor topography - for ocean waters off the coast of Massachusetts. The layer was created by EOEA Coastal Zone Management analysts for graphic display purposes only and is general in nature; it should not be used for navigation. Polygons were delineated from a 1:250,000 USGS regional map. Ocean depth measurements are in meters. The dataset is stored as a single coverage in the NE library named BTHOS250. In ArcSDE the layer is named BTHOS250_POLY.
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