Bathymetry > National Data

Downloadable Bathymetry Datasets

Use the Data Explorer to find and download high-resolution bathymetry data from around the region hosted by the NOAA National Centers for Environmental Information (NCEI). Open this Data Explorer map and click any footprint to reveal the data download link in a popup window. For additional sources of externally hosted data, visit the Data Download page.

This page contains links to resources maintained by U.S. federal agencies regarding repositories of bathymetry and coastal topography for the nation.


BlueTopo is a compilation of the nation’s best available bathymetric data. Created as part of the NOAA Office of Coast Survey nautical charting mission and its National Bathymetric Source project, BlueTopo is curated bathymetric source data to provide a definitive nationwide model of the seafloor and the Great Lakes. Blue Topo is still under development for many parts of the nation, but the New England region has been completed. BlueTopo will soon be available to view and access as a web service through nowCOAST™. You can find the BlueTopo available through NOAA’s Big Data Program.

National Bathymetric Data Viewer

NOAA National Centers for Environmental Information (NCEI) National Bathymetric Data Viewer

An interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA’s NCEI. View one of the layers from the tool – Surveys with Digital Sounding Data – in an interactive Northeast Ocean Data Portal map.

NOAA NCEI Coastal Elevation Models

NCEI builds and distributes high-resolution, coastal digital elevation models (DEMs) that integrate ocean bathymetry and land topography supporting NOAA’s mission to understand and predict changes in Earth’s environment, and conserve and manage coastal and marine resources to meet our Nation’s economic, social, and environmental needs. DEMs are used for coastal process modeling (tsunami inundation, storm surge, sea-level rise, contaminant dispersal, etc.), ecosystems management and habitat research, coastal and marine spatial planning, and hazard mitigation and community preparedness.

NOAA Office for Coastal Management Data Access Viewer

Allows a user to search for and download elevation (lidar), imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer.

U.S. Coastal Relief Model Vol.1 – Northeast Atlantic

NGDC’s U.S. Coastal Relief Model (CRM) provides the first comprehensive view of the U.S. coastal zone integrating offshore bathymetry with land topography into a seamless representation of the coast.

USACE Hydrographic Surveys (eHydro)

Hydrographic surveys that have been processed and uploaded by U.S. Army Corps of Engineers Districts.

U.S. Geological Survey Science Data Catalog

This link will take users to a version of the catalog filtered to show bathymetry products in U.S. waters. The underlying data are often collected by other entities, but the products are developed by USGS to support the work of their Coastal and Marine Science Centers.