USDOT_BTS_NTAD_Principal_Ports eng; USA 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 information applies to the dataset Navigation and Civil Works Decision Support Center United States Army Corp of Engineers (USACE) CEIWR-NDCWCSC WEBMASTER IWR 7701 Telegraph Road Alexandria VA 22315 United States web.CEIWR-NDCWCSCWEBMASTER@usace.army.mil party who can be contacted for acquiring knowledge about or acquisition of the resource 2025-12-16 ISO 19139 Geographic Information - Metadata ISO/TS 19139:2007 solid 150 3857 EPSG Principal Ports 2013-07-01 date identifies when the resource was brought into existence 2025-04-17 date identifies when the resource was examined or re-examined and imporved or amended United States Army Corp of Engineers (USACE) party who created the resource map represented in raster or vector form The Principal Ports dataset is periodically updated by the United States Army Corp of Engineers (USACE) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The principal port file contains USACE port codes, geographic location, names, and commodity tonnage summaries (total tons, domestic, foreign, imports and exports) for principal USACE ports for CY 2023. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1529073 The principal port file contains USACE port codes, geographic location, names, and commodity tonnage summaries (total tons, domestic, foreign, imports and exports) for principal USACE ports for CY 2023. Acknowledgment of the U.S. Army Corps of Engineers (USACE)/Navigation and Civil Works Decision Support/Waterborne Commerce Statistics Center, and Bureau of Transportation Statistics (BTS) [distributor]. data is continually being updated Navigation and Civil Works Decision Support Center United States Army Corp of Engineers (USACE) CEIWR-NDCWCSC WEBMASTER IWR 7701 Telegraph Road Alexandria VA 22315 United States web.CEIWR-NDCWCSCWEBMASTER@usace.army.mil party who can be contacted for acquiring knowledge about or acquisition of the resource data is updated as deemed necessary NTAD National Transportation Atlas Database National Transportation Atlas Database vector point Marine Maritime ndc Navigation USACE COE foreign tonnage Principal Port Major Major Ports keyword identifies a particular subject or topic none USA National keyword identifies a location none This NTAD dataset is a work of the United States government as defined in 17 U.S.C. § 101 and as such are not protected by any U.S. copyrights. This work is available for unrestricted public use. This data set is publicly available without any use restrictions; however, this data set was developed for use at a national scale and may not be appropriate for use in local scale mapping. limitation not listed Access Constraints: unrestricted National Transportation Atlas Database 2025-04-17 publication Bureau of Transportation Statistics (BTS) party who published the resource reference to a master dataset of which this one is a part vector data is used to represent geographic data eng; USA transportation Native Dataset Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362 -166.774838883283 -64.5126717687684 17.6234713274883 61.4840445473463 2023-12-31 1 Principal Ports A data dictionary resource of attribute information is accessible at https://doi.org/10.21949/1529073 Open Data Catalog 1.0 ArcGIS REST Services Directory Feature Server (WFS) 11.5 Bureau of Transportation Statistics (BTS) NTAD Program Manager 1200 New Jersey Ave. SE Washington DC 20590 United States ntad@dot.gov party who distributes the resource None. No fees are applicable for obtaining the dataset. https://doi.org/10.21949/1522248 http Open Data Catalog Web page to view and download dataset. The file download formats available include: ESRI File Geodatabase or Shapefile, GeoPackage, Comma-Seperated Values (CSV), Microsoft Excel, GeoJSON, KML, Feature Collection, and SQLite Geodatabase. online instructions for transferring data from one storage device or system to another https://doi.org/10.21949/1528014 http ArcGIS REST Services Directory Feature Server (WFS) complies with OGC WFS Map Service for visualizing geospatial information online instructions for transferring data from one storage device or system to another information applies to the dataset Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. data is updated as deemed necessary Navigation and Civil Works Decision Support Center United States Army Corp of Engineers (USACE) CEIWR-NDCWCSC WEBMASTER IWR 7701 Telegraph Road Alexandria VA 22315 United States web.CEIWR-NDCWCSCWEBMASTER@usace.army.mil party that accepts accountability and responsability for the data and ensures appropriate care and maintenance of the resource