USGS Map service: National Shoreline Change - Offshore Baseline

Metadata Updated: November 13, 2020

Beach erosion is a chronic problem along most open-ocean shores of the United States. As coastal populations continue to grow, and community infrastructures are threatened by erosion, there is increased demand for accurate information regarding past and present shoreline changes. There is also need for a comprehensive analysis of shoreline movement that is regionally consistent. To meet these national needs, the USGS National Assessment of Shoreline Change Project has collected and analyzed a comprehensive database of digital vector shorelines by compiling shoreline positions from pre-existing historical shoreline databases and by generating historical and modern shoreline data. This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics. This baseline layer serves as the starting point for all transects cast by the DSAS application. The resulting rates of change are available in services with the titles USGS Map service: National Shoreline Change - Long-Term Shoreline Change Rates and USGS Map service: National Shoreline Change - Short-Term Shoreline Change Rates. To make this shoreline data more accessible to the public and other agencies, the USGS created this web service. This web service was created utilizing Esri ArcServer. This service meets open geospatial consortium standards. The geographic information system (GIS) data layers from this web service are cataloged by state for ease of access.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date September 6, 2018
Metadata Created Date November 12, 2020
Metadata Updated Date November 13, 2020
Reference Date(s) January 1, 2011 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date September 6, 2018
Metadata Created Date November 12, 2020
Metadata Updated Date November 13, 2020
Reference Date(s) January 1, 2011 (publication)
Responsible Party U.S. Geological Survey (Point of Contact)
Contact Email
Access Constraints Use Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset., Access Constraints: None
Bbox East Long -66.97
Bbox North Lat 49.37
Bbox South Lat 24.96
Bbox West Long -124.73
Coupled Resource
Frequency Of Update notPlanned
Licence Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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