Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

  • Feedback

    • OCS Protraction Polygons - 1st Division

    Metadata Updated: February 6, 2026

    This is a national data collection of data resources managed by the Bureau of Ocean Energy Management (BOEM) for the Outer Continental Shelf (OCS). The data collection is designated as a National Geospatial Data Asset (NGDA) and includes: OCS BOEM Offshore Boundary Lines (Submerged Lands Act Boundary, OCSLA Limit of “8(g) Zone,” and Continental Shelf Boundary), OCS Protraction Polygons - 1st Division, OCS Gulf of Mexico NAD27 Protraction Polygons - 1st Division, OCS Block Polygons - 2nd Division, OCS Gulf of Mexico NAD27 Block Polygons - 2nd Division, and Aliquot 16ths Polygons - 3rd Division.

    All polygons are clipped to the Submerged Land Act Boundary and Continental Shelf Boundaries reflecting federal jurisdiction. The NAD27 Gulf of Mexico Protractions and Blocks have a different protraction and block configuration when compared to the OCS Protraction Polygons - 1st Division and OCS Block Polygons - 2nd Division. The NAD27 Gulf of Mexico data is used for Oil and Gas leasing.

    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. However, the services in this collection have been published in WGS 1984 Web Mercator Auxiliary Sphere (EPSG 3857). 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.

    Layers Metadata

    OCS BOEM Offshore Boundary Lines

    OCS Protraction Polygons - 1st Division

    OCS Gulf of Mexico NAD27 Protraction Polygons - 1st Division

    OCS Block Polygons - 2nd Division

    OCS Gulf of Mexico NAD27 Block Polygons - 2nd Division

    Aliquot 16ths Polygons - 3rd Division

    Access & Use Information

    Public: This dataset is intended for public access and use. License: us-pd

    Downloads & Resources

    Dates

    Metadata Created Date September 11, 2025
    Metadata Updated Date February 6, 2026

    Metadata Source

    Harvested from DOI BOEM DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 11, 2025
    Metadata Updated Date February 6, 2026
    Publisher Bureau of Ocean Energy Management
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=b7c257a27e8743028726d040b256ff3e&sublayer=1
    Data First Published 2024-10-23T16:41:43Z
    Data Last Modified 2026-02-05T17:48:02Z
    Category Geospatial
    Public Access Level public
    Bureau Code 010:06
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/boem-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 537f09d6-9ece-404f-9e57-b3379037e9fa
    Harvest Source Id 1c6917da-8697-4548-9680-18518631fb48
    Harvest Source Title DOI BOEM DCAT-US
    Homepage URL https://boem-metaport-boem.hub.arcgis.com/datasets/BOEM::ocs-protraction-polygons-1st-division
    License https://www.usa.gov/publicdomain/label/1.0/
    Metadata Type geospatial
    Old Spatial -180.0000,16.9530,180.0000,74.9964
    Program Code 010:000
    Source Datajson Identifier True
    Source Hash 56e0712faee606568a2e69248b8306e2f9e5c44279677c9b790760ad92f7040d
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -180.0000, 16.9530, -180.0000, 74.9964, 180.0000, 74.9964, 180.0000, 16.9530, -180.0000, 16.9530}

    Didn't find what you're looking for? Suggest a dataset here.