• Atlantic NAD 83 SLA Baseline Tangents

    Metadata Updated: March 17, 2021

    This data set contains baseline tangent lines in ArcGIS shapefile format for the BOEM Atlantic Region. Baseline tangent lines are typically bay or river closing lines used by the BOEM to calculate the Submerged Lands Act (SLA) boundary, the Limit of '8(g) Zone', and other offshore boundary lines. These tangent lines would project staight line segments in any projected line, while baseline points would project circular arc segments to the projected boundary. A second file containing baseline points is also available. Additional details are available from: https://www.boem.gov/BOEM-Newsroom/Library/Publications/1999/99-0006-pdf.aspx Because GIS projection and topology functions can change or generalize coordinates, these GIS files are considered to be approximate and are NOT an OFFICIAL record for the exact baseline coordinates. The Official Protraction Diagrams (OPDs) and Supplemental Official Block Diagrams (SOBDs) serve as the legal definition for BOEM offshore boundary coordinates and area descriptions.

    Access & Use Information

    License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Date February 1, 2021
    Metadata Created Date March 17, 2021
    Metadata Updated Date March 17, 2021
    Reference Date(s) October 5, 2010 (publication)
    Frequency Of Update asNeeded

    Graphic Preview

    An image of the BOEM Atlantic Region, with coastline in gray and baseline tangent lines in red.

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 1, 2021
    Metadata Created Date March 17, 2021
    Metadata Updated Date March 17, 2021
    Reference Date(s) October 5, 2010 (publication)
    Responsible Party Bureau of Ocean Energy Management, Mapping and Boundary Branch (Point of Contact)
    Contact Email
    Guid
    Access Constraints Use Constraints: The data was developed within the U.S. Government; no proprietary rights may be attached to them nor may they be sold to the U.S. Government as part of any procurement of ADP products or services., Access Constraints: None. The Block and Boundary data is in the public domain.
    Bbox East Long -67.166572
    Bbox North Lat 44.662736
    Bbox South Lat 25.333176
    Bbox West Long -81.447680
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description An image of the BOEM Atlantic Region, with coastline in gray and baseline tangent lines in red.
    Graphic Preview File https://www.boem.gov/assets/0/79/99/203/b02f7ef2-32d0-4750-806c-608f4c5652ba.gif
    Graphic Preview Type GIF
    Harvest Object Id 97184d1a-df42-4b31-a631-055180220abe
    Harvest Source Id 7cb2c0ad-d734-4a47-94bd-6cc6b06fd25f
    Harvest Source Title BOEM-Geospatial
    Licence As is. No responsibility is assumed for the correctness of this data.
    Metadata Language eng; USA
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2005-01-01
    Temporal Extent End 2008-01-01

    Didn't find what you're looking for? Suggest a dataset here.