EarthWorks Geospatial Catalog

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1. 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...

2. 12-nautical mile Buffer from Inhabited Massachusetts Coastline

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

3. 30-meter Contour

2009. These data were created from a CZM bathymetry layer to show the 30-meter isobath.

4. 60-meter Contour

2009. These data were created from a CZM bathymetry layer to show the 60-meter isobath.

5. Aqueducts

1998. The Aqueducts layer comtains linework representing water-transporting conduits from 1:100,000 U.S. Geological Survey Digital Line Graph (DLG) files...

6. Aquifers (Arcs)

2003. MassGIS produced an aquifer datalayer composed of 20 individual panels, generally based on the boundaries of the major drainage basins. Areas of hi...

7. Areas of Critical Environmental Concern (Arcs)

2009. The Areas of Critical Environmental Concern (ACEC) datalayers provide digital polygon and line boundaries for areas that have been designated ACECs...

8. Atlantic NAD 83 Continental Shelf Boundary (CSB)

2005. This data set contains Continental Shelf Boundary (CSB) lines in ESRI shapefile format for the BOEMRE Atlantic Region. The CSB defines the seaward ... Bureau of Ocean Energy Management, Regulation and Enforcement, Mapping and Boundary Branch.

9. Atlantic NAD 83 SLA Baseline Tangents

2005. This data set contains baseline tangent lines in ArcGIS shapefile format for the BOEMRE Atlantic Region. Baseline tangent lines are typically bay o... Bureau of Ocean Energy Management, Regulation and Enforcement, Mapping and Boundary Branch.

10. Atlantic NAD83 Limit of '8(g) Zone'

2005. This data set contains the Limit of '8(g) Zone' line in ESRI shapefile format for the BOEMRE Atlantic Region. The '8(g) Zone' lies between the Subm... Bureau of Ocean Energy Management, Regulation and Enforcement, Mapping and Boundary Branch.