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OCS Gulf NAD27 Protraction Polygons - 1st Division

Published by Bureau of Ocean Energy Management | Department of the Interior | Catalog Last Checked: May 28, 2026 at 04:25 PM | Dataset Last Updated: May 27, 2026 at 05:59 PM
These data contain a Gulf OCS Region NAD27 scale spatial footprint of the outer boundaries of the Bureau of Ocean Energy Management’s (BOEM’s) Official Protraction Diagrams (OPDs) and Leasing Maps (LMs). These polygons are clipped to the Submerged Land Act Boundary and Continental Shelf Boundaries and are updated as needed. OPDs are mapping products produced and used by the BOEM to delineate areas available for potential offshore mineral leases, determine the State/Federal offshore boundaries, and determine the limits of revenue sharing and other boundaries to be considered when leasing offshore waters. The OPDs serve as the legal definition for BOEM offshore boundary coordinates and area descriptions. These data show only the outline of the maps that are available from BOEM. Only the most recently published paper or pdf versions of the OPDs should be used for official or legal purposes. Further information on the history of the development of OPDs can be found in OCS Report MMS 99-0006: Boundary Development on the Outer Continental Shelf.These data were created in the applicable NAD83 UTM or NAD27 UTM/SPCS Projection and re-projected to GCS WGS84 (EPSG 4326) for management in BOEM's enterprise GIS. Because GIS projection and topology functions can change or generalize coordinates, these data are NOT an OFFICIAL record for the exact boundaries. These data are to be used for Cartographic purposes only and should not be used to calculate area.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "010:06"
]
contactPoint 
{
  "fn": "BOEM_GeoSEAS",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:geoseas@boem.gov"
}
description <div style='text-align:Left;'><div><div><p><span>These data contain a Gulf OCS Region NAD27 scale spatial footprint of the outer boundaries of the Bureau of Ocean Energy Management’s (BOEM’s) Official Protraction Diagrams (OPDs) and Leasing Maps (LMs). These polygons are clipped to the Submerged Land Act Boundary and Continental Shelf Boundaries and are updated as needed. OPDs are mapping products produced and used by the BOEM to delineate areas available for potential offshore mineral leases, determine the State/Federal offshore boundaries, and determine the limits of revenue sharing and other boundaries to be considered when leasing offshore waters. The OPDs serve as the legal definition for BOEM offshore boundary coordinates and area descriptions. These data show only the outline of the maps that are available from BOEM. Only the most recently published paper or pdf versions of the OPDs should be used for official or legal purposes. Further information on the history of the development of OPDs can be found in </span><a target='_blank' href='https://geoseas-public.geoplatform.gov:443/OMC/Documents/99-0006.pdf' rel='nofollow ugc noopener noreferrer'><i><u>OCS Report MMS 99-0006: Boundary Development on the Outer Continental Shelf</u></i></a><span>.</span></p><p><span>These data were created in the applicable NAD83 UTM or NAD27 UTM/SPCS Projection and re-projected to GCS WGS84 (EPSG 4326) for management in BOEM's enterprise GIS. Because GIS projection and topology functions can change or generalize coordinates, </span><strong>these data are NOT an OFFICIAL record for the exact boundaries. These data are to be used for Cartographic purposes only and should not be used to calculate area.</strong></p></div></div></div>
distribution 
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identifier https://www.arcgis.com/home/item.html?id=3ce42cb9cd0f4cc09a7a566a2cf4b50c&sublayer=10
issued 2026-05-21T13:15:56Z
keyword 
[
  "Administrative",
  "Alaska",
  "Atlantic",
  "BDS",
  "BOEM",
  "Boundary Delineation System",
  "Bureau of Ocean Energy Management",
  "Cadastre Theme",
  "Conventional Energy",
  "Energy",
  "Gas",
  "Gulf",
  "ISO 19115",
  "Marine Minerals",
  "OCS",
  "OMC",
  "OPDs Outer Continental Shelf",
  "Official Protraction Diagrams",
  "Offshore Marine Cadastre",
  "Oil",
  "Pacific",
  "Protractions",
  "Renewable Energy",
  "U.S. Territories",
  "Wind"
]
landingPage https://boem-metaport-boem.hub.arcgis.com/datasets/BOEM::ocs-gulf-nad27-protraction-polygons-1st-division
modified 2026-05-27T17:59:34.384Z
programCode 
[
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]
publisher 
{
  "name": "Bureau of Ocean Energy Management",
  "@type": "org:Organization"
}
spatial -97.2115,23.8230,-81.1372,30.2463
theme 
[
  "geospatial"
]
title OCS Gulf NAD27 Protraction Polygons - 1st Division

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