GeoData @ UCB

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1. Massachusetts Major Drainage Basins

1990. Harvard Map Collection. This datalayer is a polygon coverage displaying Major Drainage Basins throughout Massachusetts. The data here were originally produced by MassGIS. ...

2. Massachusetts Major Watersheds

1990. Harvard Map Collection. This datalayer is a polygon coverage displaying Major Watersheds throughout Massachusetts. The data here were originally produced by MassGIS. Mass...