GeoData @ UCB

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1. Massachusetts Major Rivers and Streams

1998. Harvard Map Collection. This datalayer is a polyline coverage displaying major streams and rivers throughout Massachusetts. This layer was derived from the Massachusetts ...

2. MassGIS 2003 Massachusetts aqueducts (July 1998)

1998. MassGIS (Office : Mass.). The Aqueducts layer contains linework representing water-transporting conduits from 1:100,000 U.S. Geological Survey Digital Line Graph (DLG) files... Office of Geographic and Environmental Information (MassGIS).