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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Rates of Change Baselines

Metadata Updated: December 6, 2025

This conflated baseline consist of two Digital Shoreline Analysis System (DSAS) Process runs. The original In 2000, the Maryland Geological Survey (MGS) was awarded a Coastal Zone Management grant to complete the acquisition of a recent (ca. 1990) digital shoreline for the coastal regions of Maryland -- the Chesapeake Bay, its tributaries, the coastal bays, and the Atlantic coast. MGS contracted the services of EarthData International, Inc. (EDI), currently of Frederick, Md., to extract shorelines from an existing wetlands delineation, which was based on photo interpretation of 3.75-minute digital orthophoto quarter quads (DOQQs). The 2000 baseline which were not created seaward includes all Maryland shoreline areas except for Anne Arundel, Baltimore, Calvert, Harford and Prince George's counties currently. The newest (2015) updated baselines were created offshore (seaward) of the shorelines utilized in DSAS analysis. The baselines were created by 1) buffering at a distance of 10m around the master shoreline feature class converting the buffer polygon to a line, and erasing the landward portion of the buffer line; and 2) manually digitizing baselines up the centerline of tributaries/rivers and other areas where baselines were needed but the buffer-created baselines did not reach.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

Downloads & Resources

Dates

Metadata Created Date July 26, 2025
Metadata Updated Date December 6, 2025

Metadata Source

Harvested from md json

Additional Metadata

Resource Type Dataset
Metadata Created Date July 26, 2025
Metadata Updated Date December 6, 2025
Publisher opendata.maryland.gov
Maintainer
Identifier https://opendata.maryland.gov/api/views/uiib-zeb6
Data First Published 2025-07-21
Data Last Modified 2025-11-30
Public Access Level public
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://opendata.maryland.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id f8e5a257-f9c3-4262-a9b0-844acb97a783
Harvest Source Id ee165ef5-7b35-41a7-b3a5-5479c71b0e58
Harvest Source Title md json
Homepage URL https://opendata.maryland.gov/d/uiib-zeb6
Source Datajson Identifier True
Source Hash bd99c5e100afea2f08ce0bfceef7af850b783d9f2ef49b23dc4dadbcaf9339bd
Source Schema Version 1.1

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