Type File Geodatabase Feature Class
Protractions are part of BOEM’s Offshore Marine Cadastre Data Collection which includes cadastral data produced by BOEM in accordance with 30 Code of Federal Regulations (CFR) Part 556.8 Subpart A, (formerly Part 256.8 Subpart A (2010)), 30 CFR 585.205 and 30 CFR 581.15 to support Federal jurisdiction on the OCS for managing the nation’s offshore resources.
These data contain a Gulf of Mexico 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. However, this service in this collection has 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.
Bureau of Ocean Energy Management (BOEM), Office of Strategic Resources (OSR), Geospatial Services Division (GSD)
https://www.usa.gov/publicdomain/label/1.0/
| West | -97.211212 | East | -81.137440 |
| North | 30.246047 | South | 23.822778 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Bureau of Ocean Energy Management (BOEM), Office of Strategic Resources (OSR), Geospatial Services Division (GSD)
Gulf of Mexico Region
https://www.usa.gov/publicdomain/label/1.0/
This national dataset was created using data from both TIMS and BDS. The data generated from TIMS was imported from an oracle database into a geodatabase using the TIMS to BDS ETL. The data is stored in the applicable NAD27 (Gulf of Mexico) and appended to the WGS84 Geographic national geodatabase to display as the OCS Gulf of Mexico NAD27 Protraction Polygons – 1st Division national dataset. The BDS Frontier Tool was used to generate the Protraction, Block and Aliquots for the Atlantic, Pacific, Territories and Gulf of Mexico areas only. The BDS OMC Dataset Creator was used to generate the National dataset and clip the Protractions, Block and Aliquots to the Submerged Land Act (SLA) Boundary and the Continental Shelf Boundary (CSB). This November 10, 2023, dataset is to be used as official cadastre data and is available for download.
OCS Gulf of Mexico NAD 27 Protraction Polygons – 1st Division
BOEM
Internal feature number.
Esri
Field in a feature class does not originate with any metadata authority.
The indicator used to identify the Bureau of Ocean Energy Management (BOEM) Outer Continental Shelf (OCS) Region.
BOEM Boundary Delineation System
Field in a feature class does not originate with any metadata authority.
The identifier of the Official Protraction Diagram or Leasing Map that the aliquot falls within.
BOEM Boundary Delineation System
Field in a feature class does not originate with any metadata authority.
The name of the Official Protraction Diagram or Leasing Map that the aliquot subarea falls within.
BOEM Boundary Delineation System
Field in a feature class does not originate with any metadata authority.
The day, month, year the block is associated to the Official Protraction Diagram or Leasing Map it falls within and is uploaded to the database.
BOEM Boundary Delineation System
Field in a feature class does not originate with any metadata authority.
An explanation or description associated with individual protraction records.
BOEM Boundary Delineation System
Field in a feature class does not originate with any metadata authority.
The day, month, and year the approved Official Protraction Diagram or Leasing Map is published in the Federal Register.
BOEM Boundary Delineation System
Field in a feature class does not originate with any metadata authority.
Feature geometry.
Esri
Field in a feature class does not originate with any metadata authority.
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.