Major Drainage Basins
MA only:
1. Interactive GIS mapping website.
The Arc Internet Map Server (ArcIMS®) application allows to view, query, and analyze the Massachusetts watersheds resource data online.
2. WRIR 90-9144 - "Water Resources of Massachusetts" - a summary of the surface water and ground-water resources of all 27 river basins.
RI only:
1. A map showing major watersheds. 
2. A map showing major watersheds with hydrography.
Acrobat Reader, is a free download from Adobe Systems, Inc. Users with disabilities can view information concerning accessibility at access.Adobe.com
MA and RI:
1. Graphic map showing 33 major drainage basins.
