The
Thames River is a short river and tidal
estuary in the
U.S. state of
Connecticut. It flows south for through eastern Connecticut from the junction of the
Yantic and
Shetucket rivers at
Norwich, to
New London and
Groton, which flank its mouth at
Long Island Sound. The Thames River watershed includes a number of smaller basins and the 80-mile-long Quinebaug River, which rises in southern Massachusetts and joins the Shetucket River about four miles northeast of Norwich.