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Bureau of Ocean Energy Management Outer Continental Shelf Lease Blocks

US Bureau of Ocean Energy Management (BOEM)
  • Added 01 Sep 2016
  • Updated 31 Aug 2018

Outer Continental Shelf (OCS) lease blocks serve as the legal definition for BOEM offshore boundary coordinates used to define small geographic areas within an Official Protraction Diagram (OPD) for leasing and administrative purposes. OCS blocks relate back to individual Official Protraction Diagrams and are not uniquely numbered. Only the most recently published paper or pdf versions of the OPDs or LMs or SOBDs should be used for official or legal purposes. The pdf maps can be found by going to the following link and selecting the appropriate region of interest within the OPD/SOBD table.

This layer is a component of BOEMRE Layers.


Copyright Copyright may apply. Please check the source for more information.
RegionsAlaska, California, Oregon, Bahamas
MetadataDublin Core

Technical Details

Layer ID 15424
Data type Vector multipolygon
Feature count 309846
Attributes Effective_Date, Protraction_Number, OCS_Block_Number
Services Vector Query API


Added 1 Sep 2016 ago
Last checked 1 Sep 2018 ago
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