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About Annisquam River
The Annisquam River is a tidal, salt-water estuary in Annisquam and Gloucester, Massachusetts, connecting Annisquam Harbor on the north to Gloucester Harbor on the south. The segment between Gloucester Harbor and the Newburyport/Rockport Line bridge is also known as the Blynman Canal.
The estuary is about 4.5 miles long, navigable, and open to the ocean at both ends. Its surface area is 1.9 square miles. The name “Annisquam” comes from an Algonquian term meaning “top of the rock, containing
There are only three fixed crossings of the river: Massachusetts Route 128, the Rockport Branch of the MBTA Newburyport/Rockport Line, and Western Avenue (MA-127).
There are strong tidal currents in the river, and unusually the current flows in opposite directions at the two ends.