OCS Aliquot 16ths Polygons – 3rd Division by US Government | Finance and Economics

About this Dataset

OCS Aliquot 16ths Polygons – 3rd Division

This is a national data collection of data resources managed by the Bureau of Ocean Energy Management (BOEM) for the Outer Continental Shelf (OCS). The data collection is designated as a National Geospatial Data Asset (NGDA) and includes: OCS BOEM Offshore Boundary Lines (Submerged Lands Act Boundary, OCSLA Limit of “8(g) Zone,” and Continental Shelf Boundary), OCS Protraction Polygons - 1st Division, OCS Gulf of Mexico NAD27 Protraction Polygons - 1st Division, OCS Block Polygons - 2nd Division, OCS Gulf of Mexico NAD27 Block Polygons - 2nd Division, and Aliquot 16ths Polygons - 3rd Division.

All polygons are clipped to the Submerged Land Act Boundary and Continental Shelf Boundaries reflecting federal jurisdiction. The NAD27 Gulf of Mexico Protractions and Blocks have a different protraction and block configuration when compared to the OCS Protraction Polygons - 1st Division and OCS Block Polygons - 2nd Division. The NAD27 Gulf of Mexico data is used for Oil and Gas leasing.

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, the services in this collection have 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.

Layers Metadata

OCS BOEM Offshore Boundary Lines

OCS Protraction Polygons - 1st Division

OCS Gulf of Mexico NAD27 Protraction Polygons - 1st Division

OCS Block Polygons - 2nd Division

OCS Gulf of Mexico NAD27 Block Polygons - 2nd Division

Aliquot 16ths Polygons - 3rd Division
Organization: Department of the Interior
Last updated: 2025-06-12T09:34:22.330965
Tags: administrative, alaska, aliquot-16ths, atlantic, bds, blocks, boem, boundary-delineation-system, bureau-of-ocean-energy-management, cadastre-theme, continental-shelf-boundary, conventional-energy, energy, gas, geospatial, gulf-of-mexico, iso-19115, limit-of-8g-zone, marine-minerals, national-geospatial-data-asset, ngda, ngdaid205, ocs, ocsla, official-protraction-diagrams, official-submerged-lands-act-boundary, offshore-marine-cadastre, oil, omc, opds, outer-continental-shelf, outer-continental-shelf-lands-act, pacific, protractions, renewable-energy, sobds, supplemental-official-block-diagrams, u-s-territories, wind

Tables

Table 1

@usgov.doi_gov_ocs_aliquot_16ths_polygons_3rd_division_aa9ef.table_1

52.02 MB
1686275 rows
13 columns


CREATE TABLE table_1 (
  "objectid" BIGINT,
  "blk_num" BIGINT,
  "prot_num" VARCHAR,
  "prot_name" VARCHAR,
  "alq_tot_area" DOUBLE,
  "remark" VARCHAR,
  "area_units" BIGINT,
  "blk_fed_aprv_date" TIMESTAMP,
  "prot_aprv_date" TIMESTAMP,
  "blklab" VARCHAR,
  "alqlab" VARCHAR,
  "shape_length" DOUBLE,
  "shape_area" DOUBLE
);