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Depth Contours for select locations across the U.S. Pacific Islands

Published by Pacific Islands Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: July 14, 2026 at 09:40 PM | Dataset Last Updated: April 30, 2026 at 12:00 AM
These data are depth contours (isobaths) derived at 50 meters for most islands and reefs in the Mariana Archipelago, American Samoa, and the Pacific Remote Island Areas. Contours at 10- or 20-meter depths have also been derived for a subset of the same locations. These contours are derived from bathymetry sources including multibeam data collected by Coral Reef Ecosystem Program (CREP) at the NOAA Pacific Islands Fisheries Science Center (PIFSC) since 2003, NOAA nautical charts, estimated depths derived from satellite images, and other sources of bathymetry collected by various agencies and entities.

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467 Mapping and EcoSpatial Information Products to support Coral Reef Ecosystem Management in the Pacific Islands Region Geographic Information > Bathymetry EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry BATHYMETRY derived products Coral Reef Conservation Program Equatorial Pacific Ocean

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@type dcat:Dataset
accessLevel non-public
contactPoint 
{
  "fn": "Akridge, Michael W",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:michael.akridge@noaa.gov"
}
describedByType application/octet-steam
description These data are depth contours (isobaths) derived at 50 meters for most islands and reefs in the Mariana Archipelago, American Samoa, and the Pacific Remote Island Areas. Contours at 10- or 20-meter depths have also been derived for a subset of the same locations. These contours are derived from bathymetry sources including multibeam data collected by Coral Reef Ecosystem Program (CREP) at the NOAA Pacific Islands Fisheries Science Center (PIFSC) since 2003, NOAA nautical charts, estimated depths derived from satellite images, and other sources of bathymetry collected by various agencies and entities.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "CONTOUR_<REGION>_POLY.zip",
    "accessURL": "ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/contours/",
    "mediaType": "text/html",
    "description": "FTP link to the folder that contains the zip files to be downloaded, one zip file for each region (Marianas, American Samoa, and Pacific Remote Island Areas).  Each region zip file contains a 50-m depth contour shapefile for each island/bank/reef/atoll in the region. A ReadMe text file is provided for each region.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "2016_contour_poly.zip",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "FTP link to download the zip file that contains a shapefile for each 10- or 20-meter depth contour shapefile that has been prepared for a subset of the locations in the region (Marianas, American Samoa, Pacific Remote Island Areas). A ReadMe text file is provided for each region that includes information about the source data used to derive the contours.",
    "downloadURL": "ftp://ftp.soest.hawaii.edu/pibhmc/website/webdocs/contours_2016/2016_contour_poly.zip",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "jar_2m_hardsoft.zip",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "FTP link to download the zip file that contains a shapefile for the 10-m depth contour shapefile that has been prepared for Jarvis. A ReadMe text file is provided that includes information about the source data used to derive the contour.  The 10 m contour polygon file for Jarvis was not provided in 2016 as there was a lack of sufficient data available at that time to derive the isobath. Access to additional better quality WorldView imagery for Jarvis allowed for new estimated depths to be generated, and therefore sufficient depth information is now available to derive the 10-m isobath.",
    "downloadURL": "ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/jar_2m_hardsoft.zip",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "how_2m_hardsoft.zip",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "FTP link to download the zip file that contains a shapefile for the 10-m depth contour shapefile that has been prepared for Howland. A ReadMe text file is provided that includes information about the source data used to derive the contour.  The 10 m contour polygon file for Howland was not provided in 2016 as there was a lack of sufficient data available at that time to derive the isobath. Access to additional better quality WorldView imagery for Howland allowed for new estimated depths to be generated, and therefore sufficient depth information is now available to derive the 10-m isobath.",
    "downloadURL": "ftp://ftp.soest.hawaii.edu/pibhmc/website/data/pria/benthichabitatlayers/how_2m_hardsoft.zip",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GCMD Keyword Forum Page",
    "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
    "mediaType": "text/html",
    "description": "Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Full Metadata Record",
    "accessURL": "https://www.fisheries.noaa.gov/inport/item/29717",
    "mediaType": "text/html",
    "description": "View the complete metadata record on InPort for more information about this dataset.",
    "describedByType": "application/octet-stream"
  }
]
identifier https://data.noaa.gov/waf/NOAA/nmfs/pifsc/iso/xml/29717.xml
keyword 
[
  "467",
  "Mapping and EcoSpatial Information Products to support Coral Reef Ecosystem Management in the Pacific Islands Region",
  "Geographic Information > Bathymetry",
  "EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry",
  "BATHYMETRY",
  "derived products",
  "Coral Reef Conservation Program",
  "Equatorial Pacific Ocean",
  "Marianas Trench Marine National Monument",
  "NW Pacific",
  "Pacific Remote Islands Marine National Monument",
  "Rose Atoll Marine National Monument",
  "South Pacific Ocean",
  "US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Agrihan Island > Agrihan Island (18N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Aguihan > Aguihan Island (Aguijan) (14N145E0006)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Alamagan Island > Alamagan Island (17N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Asuncion Island > Asuncion Island (19N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Farallon de Medinilla > Farallon de Medinilla (16N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Farallon de Pajaros > Farallon de Pajaros (20N144E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Guguan > Guguan Island (17N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Maug > Maug Island (20N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Northern Mariana Islands > Northern Mariana Islands ( CNMI ) (18N146E0000)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Northern Mariana Islands > Zealandia Bank (16N145E0005)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Pagan > Pagan Island (18N145E0001)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Rota > Rota Island ( Luta ) (14N145E0007)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Saipan > Saipan Island (15N145E0002)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Sarigan Island > Sarigan Island (16N145E0003)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Supply Reef (16N145E0004)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Tinian > Tinian Island (14N145E0005)",
  "COUNTRY/TERRITORY > Northern Mariana Islands > Uracas Island > Uracas Island (20N144E0002)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Manu'a Islands (14S170W0038)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Ofu Island (14S169W0013)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Olosega Island (14S169W0014)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Rose Atoll (14S168W0001)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Swains Atoll (11S171W0001)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Ta'u Island (14S169W0012)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016)",
  "COUNTRY/TERRITORY > United States of America > American Samoa > South Bank (14S170W0067)",
  "COUNTRY/TERRITORY > United States of America > Guam > Eleven Mile Reef (13N144E0059)",
  "COUNTRY/TERRITORY > United States of America > Guam > Galvez Bank (13N144E0049)",
  "COUNTRY/TERRITORY > United States of America > Guam > Guam (13N144E0000)",
  "COUNTRY/TERRITORY > United States of America > Guam > South Galvez Bank (13N144E0060)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Baker Island (00N176W0001)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Howland Island (00S176W0001)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Jarvis Island (00S160W0001)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Johnston Atoll (16N169W0001)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Kingman Reef (06N162W0001)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Palmyra Atoll (05N162W0001)",
  "COUNTRY/TERRITORY > United States of America > USA Minor Outlying Islands > Wake Atoll (19N167E0001)",
  "OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)",
  "OCEAN BASIN > Pacific Ocean > American Samoa > Manu'a Islands (14S170W0038)",
  "OCEAN BASIN > Pacific Ocean > American Samoa > Rose Atoll (14S168W0001)",
  "OCEAN BASIN > Pacific Ocean > American Samoa > South Bank (14S170W0067)",
  "OCEAN BASIN > Pacific Ocean > American Samoa > Swains Atoll (11S171W0001)",
  "OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Baker Island > Baker Island (00N176W0001)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Howland Island > Howland Island (00S176W0001)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Johnston Atoll > Johnston Atoll (16N169W0001)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Line Islands > Jarvis Island (00S160W0001)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Line Islands > Kingman Reef (06N162W0001)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Line Islands > Palmyra Atoll (05N162W0001)",
  "OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Wake Atoll > Wake Atoll (19N167E0001)",
  "OCEAN BASIN > Pacific Ocean > Manu'a Group > Ofu Island (14S169W0013)",
  "OCEAN BASIN > Pacific Ocean > Manu'a Group > Olosega Island (14S169W0014)",
  "OCEAN BASIN > Pacific Ocean > Manu'a Group > Ta'u Island (14S169W0012)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Agrihan Island > Agrihan Island (18N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Aguihan Island Reefs > Aguihan Island (Aguijan) (14N145E0006)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Alamagan Island > Alamagan Island (17N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Asuncion Island > Asuncion Island (19N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Farallon de Medinilla > Farallon de Medinilla (16N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Farallon de Pajaros > Farallon de Pajaros (20N144E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Eleven Mile Reef (13N144E0059)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Galvez Bank (13N144E0049)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > Guam (13N144E0000)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guam > South Galvez Bank (13N144E0060)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Guguan Island > Guguan Island (17N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Mariana Archipelago > Northern Mariana Islands ( CNMI ) (18N146E0000)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Mariana Islands > Zealandia Bank (16N145E0005)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Maug Island > Maug Island (20N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Pagan Island > Pagan Island (18N145E0001)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Rota Island > Rota Island ( Luta ) (14N145E0007)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Saipan Island > Saipan Island (15N145E0002)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Sarigan Island > Sarigan Island (16N145E0003)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Supply Reef (16N145E0004)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Tinian Island Reefs > Tinian Island (14N145E0005)",
  "OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Uracas Island > Uracas Island (20N144E0002)",
  "CRED",
  "CREP",
  "Coral Reef Ecosystem Division",
  "Coral Reef Ecosystem Program",
  "PIFSC",
  "Pacific Islands Fisheries Science Center",
  "bathymetric contour",
  "depth contour",
  "depth curve",
  "Mariana Islands",
  "Marianas",
  "PRIA",
  "Pacific Remote Island Areas",
  "DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
  "Bathymetry"
]
landingPage https://www.fisheries.noaa.gov/inport/item/29717
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-04-30T00:00:00.000+00:00
publisher 
{
  "name": "Pacific Islands Fisheries Science Center",
  "@type": "org:Organization"
}
rights otherRestrictions, unclassified
spatial 147.0,13.0,142.0,21.0
title Depth Contours for select locations across the U.S. Pacific Islands

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