Looking for land elevation data? Go to our Elevation Data page.

Like elevation data, bathymetric data (underwater elevation) generally comes in two formats: contour lines or digital elevation models (DEMs). Contour lines are the elevation lines you often see on topographic maps and they are generally measured in feet or metres below sea level. DEMs are raster datasets that have pixels like a digital image, except that each pixel contains an elevation value for the land area (e.g. 900m2 in a DEM with a 30m resolution) that the pixel covers. It is possible to create DEMs from contours and contours from DEMs using GIS software.

Below is a list of bathymetric datasets by geography, beginning with Ottawa-Gatineau and moving up to the entire world. Those available only to Carleton students, faculty, and staff are marked with a Carleton logo. All others are freely available to anyone.

The bathymetric datasets listed on this page are for non-navigational use only, unless otherwise specified.

Bathymetric data for Ottawa-Gatineau | Ontario | Canada | USA & North America | International




USA & North America


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