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Screenshot of NGDC Bathymetry Viewer


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World Data Service for Geophysics

Bathymetry and Global Relief

Scientific stewardship, products, and services for ocean depth data
and derived digital elevation models


Bathymetry (Ocean Depths)
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Bathymetric & Fishing Maps
Great Lakes
IHO Data Center for Digital Bathymetry (IHO DCDB)
International Projects for Ocean Mapping
Multibeam Data
NOS Hydrographic Survey Data
Paleobathymetry of the Circum-Antarctic
Satellite-derived Data
Trackline Data
Unstructured Grid Catalog
US Extended Continental Shelf Project
Combined Bathymetry & Topography
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Coastal Relief & Tsunami Inundation
Coastlines & Coastline Extractor
Digital Elevation Model (DEM) Discovery Portal   
Global Relief (ETOPO1, ETOPO2, ETOPO5)
Topography (Land Elevations)
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All Topography
Lidar Archive

NGDC compiles, archives, and distributes bathymetric data from coastal and open ocean areas, including acting as the long-term archive for NOAA National Ocean Service (NOS) data collected in support of charting and navigation and as the data management lead for the US Extended Continental Shelf (ECS) Project.

NGDC compiles the global ETOPO1 1-minute relief database, coastal relief models for US coastal areas, creates digital elevation models for tsunami inundation research, and stewards gridded topographic data from the GLOBE project.

NGDC participates in numerous international ocean mapping projects, and operates the International Hydrographic Organization (IHO) Data Center for Digital Bathymetry (IHO DCDB) on behalf of the member nations.

Related Data at NGDC:

Marine Geology & Geophysics
Sediment Thickness
Tsunamis & Tides
Water Column Sonar Data

Related External Sites