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From CSDMS
Perspective image of NOS BAG survey bathymetry +
Creation date"Creation date" is a predefined property that corresponds to the date of the first revision of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
23:05:19, 12 February 2010 +
ASCII +
Measured +
NAD 83 geographic, NAD 27 geographic, various UTM zones (horizontal); MLW and MLLW (vertical) +
varies with survey date and water depth +
Conterminous United States, Alaska, Hawaii, Puerto RIco, and island territories. +
Time snap shot +
By survey date +
The National Ocean Service (NOS) Hydrograp … The National Ocean Service (NOS) Hydrographic Data Base (NOSHDB), maintained by NGDC in conjunction with NOS, provides extensive survey coverage of the coastal waters and Exclusive Economic Zone (EEZ) of the United States and its territories. The NOSHDB contains data digitized from smooth sheets of hydrographic surveys completed between 1851 and 1965, and from survey data acquired digitally on NOS survey vessels since 1965.</br></br>Over 76 million soundings from over 6600 surveys are now included in the NOSHDB. These data may be searched and downloaded online using the Hydrographic Survey Data Map Service (an interactive map and data discovery tool at NGDC; https://www.ncei.noaa.gov/maps/bathymetry/?layers=nos_hydro&minx=-200&maxx=-50&miny=10&maxy=70). The NOSHDB data with search and retrieval software are also available on a DVD-ROM or CD-ROM set.</br></br>Data products from NOS surveys, including BAG files, descriptive reports (DRs), smooth sheet images, survey data images, textual gridded data, and sidescan sonar mosaics, are available for download from NGDC using the Hydrographic Survey Data Map Service. from NGDC using the Hydrographic Survey Data Map Service. +
Last editor is"Last editor is" is a predefined property that contains the page name of the user who created the last revision and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
16:43:11, 11 March 2025 +
Database of U.S. hydrographic surveys conducted by NOAA's National Ocean Service +
BAG (Bathymetric Attribute Grid) +
Image:NOSHDB.png +
