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Alaska Active and Historic Leases

Published by Bureau of Ocean Energy Management | Department of the Interior | Catalog Last Checked: October 14, 2026 at 10:57 PM | Dataset Last Updated: October 13, 2026 at 12:00 AM
This dataset depicts the boundaries of federal offshore oil and gas leases in the Alaska Outer Continental Shelf (OCS) Region. It includes areas that are currently under federal lease as well as areas that were previously leased. The layer provides a geographic view of federal OCS leasing activity and supports general reference, situational awareness, and planning. All areas represented in this dataset are located in federal OCS waters; leases in state waters are not included. The dataset is updated as needed to reflect changes in federal leasing.About OCS LeasingFederal OCS leases grant industry the right to explore for and potentially develop offshore energy resources under the authority of the Outer Continental Shelf Lands Act (OCSLA). Each lease encompasses one or more OCS lease blocks established by the federal leasing grid. This dataset illustrates the spatial extent of those federal lease areas but does not represent operational activity, production status, or legal boundaries for official use.Coordinate and Grid InformationLease boundaries in this dataset are based on the official coordinates published in the applicable Official Protraction Diagrams (OPDs) or Supplemental Official Block Diagrams (SOBDs). Older leases issued on the NAD 27 leasing grid retain their original legal coordinates for the duration of the lease. While these coordinates are projected to NAD 83 for mapping purposes, NAD 27 legacy leases may not visually align with the modern NAD 83 grid, which reflects a complete re‑grid rather than a reprojection. All leasing beginning in 1996 (Sale 144 and later) uses the NAD 83 leasing grid.Use LimitationsThese data are provided for general informational purposes and do not replace official lease records. The U.S. Department of the Interior (DOI) assumes no responsibility for errors or omissions and makes no warranty regarding accuracy, reliability, completeness, or suitability for any particular use. Distribution of this dataset does not imply any such warranty. Users are responsible for determining whether the data meet their needs and for verifying information against official sources as required. The DOI is not liable for any damages arising from the use of or reliance on this dataset.

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Complete Metadata
accessLevel public
bureauCode 
[
  "010:06"
]
contactPoint 
{
  "fn": "BOEM_AK",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:geoseas@boem.gov"
}
description <div style='font-size:14px; font-style:normal; font-weight:400; line-height:20px;'><p>This dataset depicts the boundaries of federal offshore oil and gas leases in the Alaska Outer Continental Shelf (OCS) Region. It includes areas that are currently under federal lease as well as areas that were previously leased. The layer provides a geographic view of federal OCS leasing activity and supports general reference, situational awareness, and planning. All areas represented in this dataset are located in federal OCS waters; leases in state waters are not included. The dataset is updated as needed to reflect changes in federal leasing.</p><p><strong>About OCS Leasing</strong><br />Federal OCS leases grant industry the right to explore for and potentially develop offshore energy resources under the authority of the Outer Continental Shelf Lands Act (OCSLA). Each lease encompasses one or more OCS lease blocks established by the federal leasing grid. This dataset illustrates the spatial extent of those federal lease areas but does not represent operational activity, production status, or legal boundaries for official use.</p><p><strong>Coordinate and Grid Information</strong><br />Lease boundaries in this dataset are based on the official coordinates published in the applicable Official Protraction Diagrams (OPDs) or Supplemental Official Block Diagrams (SOBDs). Older leases issued on the NAD 27 leasing grid retain their original legal coordinates for the duration of the lease. While these coordinates are projected to NAD 83 for mapping purposes, NAD 27 legacy leases may not visually align with the modern NAD 83 grid, which reflects a complete re‑grid rather than a reprojection. All leasing beginning in 1996 (Sale 144 and later) uses the NAD 83 leasing grid.</p><p><strong>Use Limitations</strong><br />These data are provided for general informational purposes and do not replace official lease records. The U.S. Department of the Interior (DOI) assumes no responsibility for errors or omissions and makes no warranty regarding accuracy, reliability, completeness, or suitability for any particular use. Distribution of this dataset does not imply any such warranty. Users are responsible for determining whether the data meet their needs and for verifying information against official sources as required. The DOI is not liable for any damages arising from the use of or reliance on this dataset.</p></div>
distribution 
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identifier https://www.arcgis.com/home/item.html?id=017615bd43ea404a8c578f479fadab43&sublayer=1
issued 2025-06-16T20:13:49Z
keyword 
[
  "BOEM",
  "Energy Resources",
  "Federal Offshore",
  "Federal Oil and Gas Leases",
  "Lease Boundaries",
  "MMA",
  "OCS",
  "OCS Leasing",
  "Offshore Energy",
  "Offshore Oil and Gas",
  "Outer Continental Shelf",
  "U.S. Department of the Interior"
]
landingPage https://boem-metaport-boem.hub.arcgis.com/datasets/BOEM::alaska-active-and-historic-leases
modified 2026-10-13T00:00:00Z
programCode 
[
  "010:000"
]
publisher 
{
  "name": "Bureau of Ocean Energy Management",
  "@type": "org:Organization"
}
spatial -178.5980,55.0104,-139.1631,72.7511
theme 
[
  "geospatial"
]
title Alaska Active and Historic Leases

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