EarthWorks Geospatial Catalog

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1. 100 Years of Estuarine Marsh Trends in Massachusetts (1893 to 1995): Boston Harbor, Cape Cod, Nantucket, Martha's Vineyard, and the Elizabeth Islands

2011. This dataset shows the general extent of the report, "100 Years of Estuarine Marsh Trends in Massachusetts (1893 to 1995): Boston Harbor, Cape Cod,...

2. 108th Congressional Districts (Arcs)

2003. The U.S. Congressional Districts datalayer reflects the U.S. House of Representatives voting district boundaries as established for the 108th Congr...

3. 108th Congressional Districts (Polygons)

2007. The U.S. Congressional Districts datalayer reflects the U.S. House of Representatives voting district boundaries as established for the 108th Congr...

4. 113th U.S. Congressional Districts

This feature class depicts the U.S. Congressional District boundaries (Polygons) for Massachusetts as signed into law on November 21, 2011.

5. 1:25,000 Coastline

MassGIS has modified the U.S. Geological Survey 1:24,000 Hydrography Digital Line Graph (DLG) quadrangle files to produce the Massachusetts coastline.

6. 12-nautical mile Buffer from Inhabited Massachusetts Coastline

2010. These data illustrate a 12-nautical mile buffer from the inhabited coastline of Massachusetts.

7. 2001 MrSID Mosaics CD-ROM Index

2006. CD-ROM index scheme for the 2001 color ortho image MrSID mosaics.

8. 2001 MrSID Mosaics Index

2002. This data layer is used to index the half-meter MrSID mosaics for the 2001/03 1:5,000 Color Ortho Imagery.

9. 2008/2009 USGS Color Ortho Index

2010. This data layer is used to index the 2008/2009 USGS color ortho image 1,500m x 1,500m GeoTIFF and MrSID tiles.

10. 2-Dimensional Building Footprints (from Lidar data)

2002. This dataset consists of 2D footprints of the buildings in the metropolitan Boston area, based on tiles in the orthoimage index. This data set was...