List of rivers of Connecticut

By drainage basin (East to West)

Block Island Sound

• Pawcatuck River – easternmost CT river basin
• *Shunock River
• *Ashaway River
• **Green Fall River
• *Wood River

  Long Island Sound

• Mystic River
• * Whitford Brook
• Poquonock River
• Thames River
• *Oxoboxo River
• *Shetucket River
• **Quinebaug River
• ***Pachaug River
• ***Blackwell Brook
• ***Moosup River
• ***Fivemile River
• ***Little River
• ***French River
• **Little River
• **Merrick Brook
• ***Beaver Brook
• **Natchaug River
• ***Mount Hope River
• ****Fenton River
• ***Bigelow Brook
• ***Still River
• **Willimantic River
• ***Tenmile River
• ***Hop River
• ****Skungamaug River
• *Yantic River
• Niantic River
• Pattagansett River
• Fourmile River
• Threemile River
• Black Hall River
• Connecticut River
• *Back River
• *Lieutenant River
• *Falls River
• *Eightmile River
• *Deep River
• *Salmon River
• **Moodus River
• **Blackledge River
• **Jeremy River
• *Sumner Brook
• **Pameacha Creek
• *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
• *Podunk River
• *Farmington River
• **Pequabu River
• ***Pequabuck River
• **Nepaug River
• ***Poland River
• **East Branch Farmington River
• ***Hubbard River
• **West Branch Farmington River
• ***Still River
• ****Mad River
• *Scantic River
• **Watchaug River
• Patchogue River
• Menunketesuck River
• Indian River
• Hammonasset River
• Neck River
• East River
• West River
• Branford River
• Farm River
• Quinnipiac River
• *Muddy River
• *Tenmile River
• *Eightmile River
• Mill River
• West River
• *Sargent River
• Cove River
• Oyster River
• Indian River
• Wepawaug River
• Housatonic River
• *Farmill River
• *Naugatuck River
• **Mad River
• *Halfway River
• *Pomperaug River
• **Nonnewaug River
• **Weekeepeemee River
• *Pootatuck River
• *Shepaug River
• **Bantam River
• **Marshepaug River
• *Still River
• *West Aspetuck River
• **East Aspetuck River
• *Rocky River
• *Ten Mile River
• *Hollenbeck River
• *Blackberry River
• **Whiting River
• *Konkapot River
• Pequonnock River
• Ash Creek
• *Rooster River
• Mill River
• Saugatuck River
• *West Branch Saugatuck River
• *Aspetuck River
• *Little River
• Norwalk River
• *Silvermine River
• Fivemile River
• Noroton River
• Rippowam River – also known as Mill River in its lower end in Stamford
• Mianus River
• Byram River – Westernmost river basin in Connecticut

  [New York Harbor]

• Hudson River
• *Croton River
• **Titicus River