Who publishes Outer Continential Shelf Blocks?

Maryland Department of Natural Resources, part of State of Maryland, publishes this dataset on Maryland Open Data.

How often is it updated?

The publisher lists the update frequency as as needed. The last update was on 07/22/2025.

How do I download it?

It is available as CSV, JSON, GeoJSON, XML. Use the links in Files and access, which open the official government source.

Something wrong? Let us know

Checked Oct 31, 2026

State dataWater

Outer Continential Shelf Blocks

Name: Outer Continential Shelf Blocks
Creator: State of Maryland
Published: 2025-07-22T02:28:55.000Z

Published by Maryland Department of Natural Resources · Updated 07/22/2025 · As needed

Official source Download CSV

Last updated: 07/22/2025; First published 07/22/2025
Update frequency: As needed
Formats: 4; CSV, JSON, GeoJSON
Coverage: Maryland; Statewide

About this dataset

This data set contains OCS block outlines in ESRI Arc/Info export and Arc/View shape file formats for the MMS Atlantic Region. OCS blocks are used to define small geographic areas within an Official Protraction Diagram (OPD) for leasing and administrative purposes. These blocks have been clipped along the Submerged Lands Act (SLA) boundary and along lines contained in the Continental Shelf Boundaries (CSB) GIS data files. Because GIS projection and topology functions can change or generalize coordinates, these GIS files are NOT an OFFICIAL record for the exact OCS block boundaries. Only the paper document or a digital image of it serve as OFFICIAL records. 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.

Files and access

Links open the official government source

CSV downloadopendata.maryland.govCSV
JSON (SODA API)opendata.maryland.govJSON
GeoJSONopendata.maryland.govGeoJSON
XMLopendata.maryland.govXML

API endpoint: https://opendata.maryland.gov/resource/j2fj-s8yh.json

Links open outside websites we do not control.

Frequently asked questions

Who publishes Outer Continential Shelf Blocks?: Maryland Department of Natural Resources, part of State of Maryland, publishes this dataset on Maryland Open Data.
How often is it updated?: The publisher lists the update frequency as as needed. The last update was on 07/22/2025.
How do I download it?: It is available as CSV, JSON, GeoJSON, XML. Use the links in Files and access, which open the official government source.

Where this catalog comes from

Data.gov CatalogU.S. General Services Administration
State and local open data portalsSocrata Discovery API
State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
Government ArcGIS Hub sitesCity and county GIS data

Catalog checked 10/24/2026

We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.

Source: Maryland Open Data and Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher