Merrymeeting Bay

Merrymeeting Bay (also formerly known as Maremiten) is a large freshwater tidal bay in Sagadahoc, Lincoln, and Cumberland counties, in the U.S. state of Maine. Merrymeeting Bay's unusual geography defies common landform terms. It is not what is usually meant by the word bay. It is somewhat like an estuary except for being fresh water with very little salt. Geologically it is described as an "inland delta" and biologically as "tidal riverine."

Bordering towns and cities include Bath, Brunswick, Topsham, Bowdoinham, Bowdoin, Richmond, Dresden, Pittston, and Woolwich. Land surrounding the bay is privately owned. Public access to the bay is gained mainly from public docks on one of the contributing rivers in Brunswick, Bath, Richmond and Bowdoinham.

Six rivers flow into the bay, the two largest being the Kennebec River and the Androscoggin River. The four other rivers are the Cathance River, Eastern River, Abagadasset River, and Muddy River. The bay drains water from nearly 40% of Maine's land area as well as from part of New Hampshire. The watershed is just under 20,000 square miles (50,000 km²).

...
Wikipedia