Maryland Department of Natural Resources

Shoreline Change Map Data for Tidewater Maryland

contact: Stephen Van Ryswick (
PLEASE NOTE: These data are for illustration purposes only. Do not use these documents for navigation, legal purposes, or any critical applications. They were created only to illustrate our publications and are not accurate enough to be used for any other purposes.

These are vector format files. Unlike raster images they can be rescaled without distortion. The files on this page were created in ArcGIS 8.3 and consist mainly of polyline segments of the shorelines that are shown on the PDF maps. The dates of these shorelines range from the mid 1800's to the 1990's. Three file formats are available:  Autodesk's Drawing Exchange Format (.DXF), ESRI's Shapefile (.SHP) and Arc Export (.E00) formats.  These are widely accepted vector data standards and are used by programs such as AutoCAD, ArcGIS, ArcInfo, CorelDraw, Adobe Illustrator, JASC's Paint Shop Pro, Bryce 3D, 3D Studio Max, and many Intergraph programs.  The ESRI .SHP file format contains shoreline attribute data. 

A complete metadata file accompanies each file.  You may also download the complete metadata in a zipped filed here. The metadata describe map projections, attributes, compilation procedures and all other critical parameters necessary to the proper use of the data. 

The maps are available in two groupings, found in the charts below:

To download data click on the desired file format in the table below. Files have been compressed with Winzip to decrease download times.  You will not be able to view the files on-line.

We also have Shoreline Change Maps in PDF format available for download.

The image below is an example of shoreline change map data displayed in ESRI's ArcMap GIS software
Shoreline Change Map Example

Shoreline Change Maps by Quadrangle

Place your mouse over the index map below to find a quadrangle name. You can find the quadrangle name and data in the table below.