OCS Block Polygons – 2nd Division

ISO-19139 Metadata

Metadata Information

Metadata language: eng
Metadata character set: utf8
Last update: 2024-10-11
Metadata maintenance:
Update frequency: asNeeded
Metadata contact:
Role: publisher
Individual's name: Geospatial Services Division
Organization's name: Bureau of Ocean Energy Management (BOEM)
Contact's position: Chief
Contact information:
Address:
e-mail address: geoseas@boem.gov
Scope of the data described by the metadata: dataset
Scope name: dataset
Name of the metadata standard used: ISO 19139 Geographic Information - Metadata - Implementation Specification
Version of the metadata standard: 2007
Metadata identifier: 72E92F37-1768-4C99-8B6B-633959DF3512

Data Identification Information

Resource citation:
Title: OCS Block Polygons – 2nd Division
Date:
Reference date - creation: 2023-04-28
Presentation format: mapDigital
Cited responsible party:
Role: publisher
Individual's name: Geospatial Services Division
Organization's name: Bureau of Ocean Energy Management (BOEM)
Contact's position: Chief
Contact information:
Address:
e-mail address: geoseas@boem.gov
Themes or categories of the resource: boundaries, oceans, planningCadastre
Descriptive keywords:
Keyword type not provided
Keywords: Downloadable Data
Keyword thesaurus:
Citation reference: 723f6998-058e-11dc-8314-0800200c9a66
Descriptive keywords:
Keyword type not provided
Keywords: Outer Continental Shelf, OCS, BOEM, Alaska, Bureau of Ocean Energy Management, Offshore Marine Cadastre, OMC, Blocks, Official Protraction Diagrams, OPDs, Supplemental Official Block Diagrams, SOBDs, Renewable Energy, Conventional Energy, Energy, BDS, Boundary Delineation System, Pacific, Gulf of Mexico
Abstract: Outer Continental Shelf (OCS) 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. These polygons are clipped to the Submerged Land Act Boundary and Continental Shelf Boundaries. OCS blocks relate back to individual Official Protraction Diagrams (OPDs) and are not uniquely numbered. A block is uniquely described by the Protraction Number and Block Number (e.g., NK18-02, Block 6822). A full OCS block is 4800 x 4800 meters. Smaller, clipped aliquots are found along the Federal/State OCS boundary and along UTM zone borders. Only the most recently published paper or PDF versions of the OPDs or Supplemental Official Block Diagrams (SOBDs) should be used for official or legal purposes. 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.
Purpose: Blocks and other cadastre information the BOEM produces are generated in accordance with 30 Code of Federal Regulations (CFR) Part 556.8 Subpart A, (formerly Part 256.8 Subpart A (2010)) to support Federal land ownership and mineral resource management.
Dataset language:eng
Dataset character set: utf8
Resource maintenance:
Update frequency: asNeeded
Resource constraints:
General constraints:
Limitations of use: https://www.usa.gov/publicdomain/label/1.0/
Spatial representation type: vector
Processing environment: Esri ArcGIS 13.2.0.49743
Resource extent:
Extent description: National Dataset covering CONUS, Alaska, Hawaii, U.S. Territories and Possessions.
Geographic element:
Bounding rectangle:
West longitude: -180
East longitude: 180
North latitude: 74.996354
South latitude: 16.953032
Credits: Bureau of Ocean Energy Management (BOEM), Office of Strategic Resources (OSR), Geospatial Services Division (GSD)
Resource point of contact:
Role: publisher
Individual's name: Geospatial Services Division
Organization's name: Bureau of Ocean Energy Management (BOEM)
Contact's position: Chief
Contact information:
Address:
e-mail address: geoseas@boem.gov

Spatial Representation

Vector Data

Level of topology for this dataset: geometryOnly
Geometric objects:
Object type: composite
Object count: 295935

Reference System Information

Reference system identifier:
Value: 4326
Code space: EPSG
Version: 6.2(3.0.1)

Data Quality

Scope of quality information:
Level of the data:dataset
Resource lineage:
Lineage statement: 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 NAD83 (Atlantic, Alaska, Gulf of Mexico and Pacific Coast, Puerto Rico, and U.S. Virgin Islands) and WGS84 (Hawaii and Pacific Territories) and appended to the WGS84 Geographic national geodatabase to display as the OCS Block Polygons – 2nd 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.

Distribution Information

Distributor:
Distributor contact:
Role: publisher
Individual's name: Geospatial Services Division
Organization's name: Bureau of Ocean Energy Management (BOEM)
Contact's position: Chief
Contact information:
Address:
e-mail address: geoseas@boem.gov