Most of Connecticut's rivers flow into

Long Island Sound Long Island Sound is a marine sound and tidal estuary of the Atlantic Ocean. It lies predominantly between the U.S. state of Connecticut to the north and Long Island in New York to the south. From west to east, the sound stretches from the Eas ...

and from there the waters mix into the Atlantic Ocean. A few extremely eastern rivers flow into Block Island Sound. The list is arranged by drainage basin from east to west, with respective tributaries indented from downstream to upstream under each larger stream's name.

By drainage basin (east to west)

Block Island Sound

* Pawcatuck River – easternmost CT river basin ** Shunock River **''

Ashaway River The Ashaway River is a river in the U.S. states of Rhode Island and Connecticut. It flows approximately 4 km (2 mi). There are three dams along the river's length. Course The river is formed in Hopkinton by the confluence of Parment ...

(Rhode Island)'' ***

Green Fall River The Green Fall River is a river in the U.S. states of Connecticut and Rhode Island. It flows approximately 13 km (8 mi). Course The river rises from a swamp south of Rockville Road ( CT 138) in Voluntown. The river then flows due south ...

** Wood River

Long Island Sound

* Mystic River **

Whitford Brook Whitford may refer to: Places * Electoral district of Whitford, Western Australia * Westfield Whitford City, shopping centre in Perth, Western Australia * Whitford, Alberta, Canada ** Whitford (provincial electoral district) * Whitford, Devon, Eng ...

* Poquonock River * Thames River ** Oxoboxo River ** Shetucket River *** Quinebaug River **** Pachaug River **** Blackwell Brook **** Moosup River **** Five Mile River **** Little River (Quinebaug River tributary) **** French River ***

Little River (Shetucket River tributary) The Little River is a river that runs through the towns of Hampton, Canterbury, Scotland, and Sprague, Connecticut. It begins at Hampton Reservoir in northern Hampton, CT and snakes its way down into the Shetucket River at the town borders of Nor ...

*** Merrick Brook **** Beaver Brook ***

Natchaug River The Natchaug River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed April 1, 2011 river in Windham and Tolland Counties in northeastern Connecticut. The name ''Natchaug'' comes from ...

**** Mount Hope River ***** Fenton River **** Bigelow Brook **** Still River (Natchaug River tributary) *** Willimantic River **** Tenmile River **** Hop River ***** Skungamaug River ** Yantic River * Niantic River *

Pattagansett River The Pattagansett River is a river located in the town of East Lyme, Connecticut, near the village of Niantic Niantic may refer to: * Niantic people, tribe of American Indians * Niantic, Inc., mobile app developer known for the mobile games ''Ingr ...

* Fourmile River * Threemile River *

Black Hall River Black Hall River is a river in the state of Connecticut, United States of America. It joins the Back River at Great Island in Old Lyme, where they enter Long Island Sound. The river is situated near the mouth of the Connecticut River. It has been de ...

Connecticut River The Connecticut River is the longest river in the New England region of the United States, flowing roughly southward for through four states. It rises 300 yards (270 m) south of the U.S. border with Quebec, Canada, and discharges at Long Island ...

** Back River ** Lieutenant River ** Falls River ** Eightmile River ** Deep River ** Salmon River ***

Moodus River Moodus is a village in the town of East Haddam, Connecticut, East Haddam, Connecticut, United States. The village is the basis of a census-designated place (CDP) of the same name. The population of the CDP was 1,982 as of the census of 2020. Hi ...

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Blackledge River The Blackledge River is a tributary of the Salmon River which courses U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed April 1, 2011 through eastern Connecticut in the United States. R ...

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Jeremy River The Jeremy River, named after Jeremy Adams, begins at a drainage just north of Holbrook Pond about east of Gilead, Connecticut and runs for to the Salmon River in Colchester, Connecticut.U.S. Geological Survey. National Hydrography Dataset high ...

Sumner Brook Sumner may refer to: Places Antarctica * Mount Sumner, a mountain in the Rare Range, Antarctica * Sumner Glacier, southern Graham Land, Antarctica Australia * Sumner, Queensland, suburb of Brisbane New Zealand * Sumner, New Zealand, seaside subu ...

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Pameacha Creek Pameacha Creek is a stream in Middletown, Connecticut. See also *List of rivers of Connecticut Most of Connecticut's rivers flow into Long Island Sound and from there the waters mix into the Atlantic Ocean. A few extremely eastern rivers flow in ...

** Mattabesset River *** Coginchaug River ** Hockanum River *** Tankerhoosen River ** Park River – also known as Hog River and Little River *** North Branch Park River ***

South Branch Park River South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþaz' ...

Podunk River The Podunk River is a stream in Hartford County, Connecticut. It is a tributary to the Connecticut River.''Hartford North CT'', 7.5 Minute Topographic Quadrangle, USGS, 1964 (1992 rev.) The stream headwaters arise at at an elevation of . The st ...

** Farmington River *** Pequabu River ****

Pequabuck River The Pequabuck River is a river, approximately 19 miles (30.6 km) in length, which rises in Litchfield County, Connecticut, and courses through neighboring Hartford County before emptying into the Farmington River in Farmington. The river ...

*** Nepaug River ****

Poland River Poland, officially the Republic of Poland, , is a country in Central Europe. Poland is divided into sixteen voivodeships and is the fifth most populous member state of the European Union (EU), with over 38 million people, and the ...

*** East Branch Farmington River ****

Hubbard River The Hubbard River, long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 is part of the Farmington River watershed. It flows through Connecticut and Massachusetts.

*** West Branch Farmington River **** Still River ***** Mad River ** Scantic River ***

Watchaug River Watchaug Pond is a kettle pond (lake) located in southern Rhode Island, in the town of Charlestown, Rhode Island, Charlestown. It is surrounded by the John Vincent Gormley 8-mile loop trail which was dedicated by Senator Jack Reed (Rhode Island po ...

* Patchogue River * Menunketesuck River *

Indian River (Clinton) Indian River may refer to: Rivers In Barbados * Indian River (Barbados) In Canada *Indian River (British Columbia), which enters Indian Arm to the north of North Vancouver *Indian River, a tidal flow east of Deer Island, New Brunswick *In Ontar ...

* Hammonasset River *

Neck River The neck is the part of the body on many vertebrates that connects the head with the torso. The neck supports the weight of the head and protects the nerves that carry sensory and motor information from the brain down to the rest of the body. In ...

* East River * West River (Guilford) * Branford River * Farm River * Quinnipiac River ** Muddy River ** Tenmile River ** Eightmile River * Mill River * West River **

Sargent River Sargent or Sargents may refer to: People * Sargent (name), includes a list of people with the name Places *Sargent, California *Sargents, Colorado *Sargent, Georgia *Sargent, Scott County, Missouri *Sargent, Texas County, Missouri *Sargent, Nebr ...

Cove River The Cove River is a stream in New Haven County in the U.S. state of Connecticut. It rises in Orange and flows through West Haven before discharging into Long Island Sound at Sea Bluff Beach by Bradley Point. Dams along the river form the Maltby ...

* Oyster River *

Indian River (Milford) The Indian River is a stream in New Haven County in the U.S. state of Connecticut. It rises in Orange and flows through Milford before discharging into Long Island Sound at Gulf Pond. Bodies of water along the stream include Clark Pond and Roses ...

Wepawaug River The Wepawaug River is a stream in New Haven County in the U.S. state of Connecticut. It rises in Woodbridge and flows through Orange and Milford before discharging into Milford Harbor on Long Island Sound. The river is dammed at more than ten pla ...

Housatonic River The Housatonic River ( ) is a river, approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 in western Massachusetts and western Connecticut in the United S ...

** Farmill River ** Naugatuck River *** Mad River ** Halfway River ** Pomperaug River ***Nonnewaug River *** Weekeepeemee River **

Pootatuck River The Potatuck were a Native American tribe in Connecticut. They were related to the Paugussett people, historically located during and prior to the colonial era in western Connecticut. They lived in what is now Newtown, Woodbury and Southbury o ...

** Shepaug River *** Bantam River ***

Marshepaug River The Marshepaug River is a stream in the towns of Goshen and Litchfield in northwest Connecticut in the United States. The river rises near the southwest corner of Woodbridge Lake and then flows in a southwest direction through the Milton Cente ...

** Still River **

West Aspetuck River West or Occident is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. Etymology The word "west" is a Germanic word passed into some R ...

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East Aspetuck River The East Aspetuck River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 river in Litchfield County, Connecticut, in the United States. It flows in a southwesterly dir ...

Rocky River Rocky River may refer to: Localities *Rocky River, Ohio, USA * Rocky River, New South Wales near Uralla, Australia Electorates *Electoral district of Rocky River (South Australia) Streams In Australia: * Rocky River (New South Wales) * R ...

** Ten Mile River **

Hollenbeck River Hollenbeck may refer to: Places in the United States * Hollenbeck Middle School, Los Angeles, California *Hollenbeck Park, Boyle Heights, Los Angeles, California *LAPD Hollenbeck Division, part of Los Angeles Police Department, California * Hollen ...

Blackberry River The Blackberry River is a westward-flowing river located entirely in the far northwest corner of the U.S. state of Connecticut. The river runs for through the towns of Norfolk and North Canaan, where it empties into the Housatonic River. The rive ...

*** Whiting River ** Konkapot River * Pequonnock River * Ash Creek **

Rooster River Rooster River is a river in Fairfield County, Connecticut that lies on and serves as the border between Bridgeport and Fairfield.

* Mill River * Saugatuck River **

West Branch Saugatuck River West or Occident is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. Etymology The word "west" is a Germanic word passed into some R ...

** Aspetuck River ** Little River * Norwalk River ** Silvermine River *

Fivemile River Five Mile or 5 Mile can refer to: * Five Mile River, in Connecticut * Five Mile River (East Brookfield River), in central Massachusetts * Five Mile River, Nova Scotia, Canada * Five Mile Pond (Plymouth, Massachusetts) * Five mile road, in Michigan * ...

Noroton River The Noroton River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed April 1, 2011 stream flowing into Holly Pond and forming most of the border between Stamford and Darien, Connect ...

Rippowam River The Rippowam River is a river in Fairfield County, Connecticut and Westchester County, New York (United States). It drains a watershed area of and flows for from Ridgefield to Long Island Sound, which it enters in Stamford's harbor. Streamf ...

– also known as Mill River in its lower end in Stamford * Mianus River * Byram River – Westernmost river basin in Connecticut

New York Harbor New York Harbor is at the mouth of the Hudson River where it empties into New York Bay near the East River tidal estuary, and then into the Atlantic Ocean on the east coast of the United States. It is one of the largest natural harbors in t ...

*'' Hudson River (New York)'' **'' Croton River (New York)'' *** Titicus River

References

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