The Thames River (/ˈθeɪmz/) is a short river and tidal estuary in the state of Connecticut. It flows south for 15 miles (24 km) through eastern Connecticut from the junction of the Yantic River and Shetucket River at Norwich, Connecticut, to New London and Groton, Connecticut 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.
|Source||The Yantic and Shetucket rivers merging|
|River mouth||Long Island Sound|
|- location||New London and Groton|
|Length||15 miles (24 km)|
|- minimum||377 feet (115 m)|
|- maximum||4,348 feet (1,325 m)|
The river has provided important harbors since the mid-17th century. It was originally known as the Pequot River after the Pequot Indians who dominated the area. Other early names for the river have included Frisius, Great, Great River of Pequot, Little Fresh, Mohegan, New London, and Pequod. The town was officially named New London in 1658 and the estuary river was renamed Thames after the River Thames in London, England.
The United States Coast Guard Academy, Connecticut College, a U.S. Navy submarine base, and the Electric Boat submarine shipyard are located on the river at New London and Groton. The USS Nautilus (SSN-571) was launched into the river on January 21, 1954 from Electric Boat, becoming the world's first nuclear-powered submarine.
The Yale-Harvard Boat Race is held annually in New London.
|Montville/||Mohegan-Pequot Bridge||Route 2A|
|New London/||Gold Star Memorial Bridge||I-95 and|
|Thames River Bridge||Amtrak|