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1. MassGIS 2003 Massachusetts Drainage Sub-basins (Polygons) (March 2003)

Polygon Harvard University Public content
2003. MassGIS (Office : Mass.). This datalayers contains polygons representing Massachusetts drainage sub-basins (see also the Drainage Sub-basins (Arc) datalayer). MassGIS has p... Office of Geographic and Environmental Information (MassGIS).

2. MassGIS 2003 Massachusetts Hydrography (1:25,000) (Polygons) (March 2003)

Polygon Harvard University Public content
2003. MassGIS (Office : Mass.). The MassGIS 1:25,000 Hydrography datalayer represents hydrographic (water-related) features, including surface water (lakes, ponds, reservoirs), we... Office of Geographic and Environmental Information (MassGIS).

3. MassGIS 2003 Massachusetts Major Drainage Basins (Polygons) (March 2003)

Polygon Harvard University Public content
2003. MassGIS (Office : Mass.). This datalayer, produced by MassGIS, contains polygons representing the 28 major drainage basins of Massachusetts as defined by the USGS Water Reso... Office of Geographic and Environmental Information (MassGIS).

5. MassGIS 2003 Massachusetts Ocean Mask Around New England

Polygon Harvard University Public content
2003. MassGIS (Office : Mass.). This datalayer contains a polygon feature representing an ocean mask for the coast of Massachusetts and surrounding New England coastline. It was ... Office of Geographic and Environmental Information (MassGIS).

6. MassGIS 2003 Massachusetts Orthophoto Wetlands (1:5,000) (February 2003)

Polygon Harvard University Public content
2003. MassGIS (Office : Mass.). This datalayer consists of polygons representing wetlands (marshes, bogs, swamps, etc.) in the state of Massachusetts. It is one of two datalayers... Office of Geographic and Environmental Information (MassGIS).