Dataset Identification:
Resource Abstract:
- description: This file is based on the Mapping and Boundary Branch's Official Protraction Diagram (OPD)and Leasing Maps
(LM). Each offshore area is defined by an API Number corresponding to those in the API Bulletin Number D12A. OPDs are numbered
using the United Nations International Map of the World Numbering System, and are generally named for land or hydrographic
features contained within the limits of the diagram. This data set contains Official Protraction Diagram (OPD) and Leasing
Map (LM) outlines in ESRI shape file formats for the BOEM Gulf of Mexico Region. The use of OPDs and LMs makes it easier to
refer to individual blocks within a region or planning area. These diagrams were clipped along the Submerged Lands Act (SLA)
boundary and along lines contained in the Continental Shelf Boundaries (CSB) GIS data files to show only those blocks or portions
thereof within federal jurisdiction. Because GIS projection and topology functions can change or generalize coordinates, these
GIS files are NOT an OFFICIAL record for the exact OPD boundaries. Only the paper OPD or a digital image of them serves as
OFFICIAL records.Official Protraction Diagrams 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. Further information on the SLA and development of this line from baseline
points can be found in OCS Report BOEM 99-0006: Boundary Development on the Outer Continental Shelf. https://www.boem.gov/BOEM-Newsroom/Library/Publications/1999/99-0006-pdf.aspx
Because GIS projection and topology functions can change or generalize coordinates, and because shapefiles cannot represent
true arcs, these GIS files are considered to be approximate and are NOT an OFFICIAL record for the exact block coordinates
or areas. The Official Protraction Diagrams (OPDs)and Leasing Maps (LMs) and Supplemental Official Block Diagrams (SOBDs)
serve as the legal definition for BOEM offshore boundary coordinates and area descriptions and can be found at the following
location: https://www.boem.gov/Official-Protraction-Diagrams/. Contains the protraction polygons clipped on the fedstate (SLA-Boundary)
as of March 15, 2013. Used ArcCatalog to create shape files.; abstract: This file is based on the Mapping and Boundary Branch's
Official Protraction Diagram (OPD)and Leasing Maps (LM). Each offshore area is defined by an API Number corresponding to those
in the API Bulletin Number D12A. OPDs are numbered using the United Nations International Map of the World Numbering System,
and are generally named for land or hydrographic features contained within the limits of the diagram. This data set contains
Official Protraction Diagram (OPD) and Leasing Map (LM) outlines in ESRI shape file formats for the BOEM Gulf of Mexico Region.
The use of OPDs and LMs makes it easier to refer to individual blocks within a region or planning area. These diagrams were
clipped along the Submerged Lands Act (SLA) boundary and along lines contained in the Continental Shelf Boundaries (CSB) GIS
data files to show only those blocks or portions thereof within federal jurisdiction. Because GIS projection and topology
functions can change or generalize coordinates, these GIS files are NOT an OFFICIAL record for the exact OPD boundaries. Only
the paper OPD or a digital image of them serves as OFFICIAL records.Official Protraction Diagrams 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. Further information on the SLA
and development of this line from baseline points can be found in OCS Report BOEM 99-0006: Boundary Development on the Outer
Continental Shelf. https://www.boem.gov/BOEM-Newsroom/Library/Publications/1999/99-0006-pdf.aspx Because GIS projection and
topology functions can change or generalize coordinates, and because shapefiles cannot represent true arcs, these GIS files
are considered to be approximate and are NOT an OFFICIAL record for the exact block coordinates or areas. The Official Protraction
Diagrams (OPDs)and Leasing Maps (LMs) and Supplemental Official Block Diagrams (SOBDs) serve as the legal definition for BOEM
offshore boundary coordinates and area descriptions and can be found at the following location: https://www.boem.gov/Official-Protraction-Diagrams/.
Contains the protraction polygons clipped on the fedstate (SLA-Boundary) as of March 15, 2013. Used ArcCatalog to create shape
files.
Citation
- Title Outer Continental Shelf Official Protraction Diagrams and Lease Maps - Gulf of Mexico Region NAD27.
-
- creation Date
2018-05-21T08:00:34.311670
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-06T23:18:44Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T23:18:44Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:b24bf6e3-c4c8-4883-8621-e0bcc024aeaf
Metadata record format is ISO19139 XML (MD_Metadata)