The Seekonk River is a tidal extension of the Providence River in the U.S. state of Rhode Island. It flows approximately 8 km (5 mi). The name may be derived from an Algonquian word for skunk^[1] or for black goose.^[2] The river is home to the Brown University men's rowing team, India Point Park, Blackstone Park Conservation District, Crook Point Bascule Bridge, Narragansett Boat Club (the oldest rowing club in the country), Swan Point Cemetery, and the Bucklin Point waste-water treatment facility.^[3] The River is listed by the Rhode Island Department of Environmental Management as an impaired waterway.^[4]

The river begins where the Blackstone River reaches sea level below Pawtucket Falls. From there it flows due south between Providence and East Providence, picks up flow from the Ten Mile River, and eventually flows into the Providence River between Bold Point and India Point. The Seekonk River is the northernmost point of Narragansett Bay tidewater.

A prominent boulder on the west shore of the Seekonk River (near the current Gano Park) was once one of Providence's most important historic landmarks. Slate Rock was said to be the spot where a group of Narragansetts first welcomed the exiled Roger Williams in 1636 with the famous phrase "What cheer, netop?", and directed him to his eventual settlement location at the fork of the Woonasquatucket and Moshassuck Rivers.^[5][6][7]

The historic rock was accidentally blown up by city workers in 1877. They were attempting to expose a buried portion of the stone, but used too much dynamite and the stone was "blasted to pieces."^[5] Pieces of the stone were later sold for souvenirs. A monument in nearby Slate Rock Park commemorates the location.^[5][6][7]

The Seekonk River is home to numerous fauna that either migrate to the bay at some point during the year or live there year-round. There are several species of fish, shellfish and crab that have been documented.^[8] Birds include loon, cormorants, herons, gulls, terns, swans and geese.^[9]

Numerous plants also make the Seekonk River their home, both on land and underwater. Common aquatic vegetation includes grasses like spartina grass and phragmites in most high marsh areas, and brown and green seaweed in the intertidal zone. Other vegetation that makes its home along the river include shrubs like rosa rugosa, various trees like the willow, oak and beech.^[10]

Below is a list of all crossings over the Seekonk River. The list starts at the headwaters and goes downstream.

• Pawtucket
  • Main Street Bridge
  • Pawtucket River Bridge; Carries Interstate 95 and U.S. 1
  • Division Street Bridge
• Providence
  • Henderson Bridge
  • Crook Point Bascule Bridge
  • Washington Bridge; Carries Interstate 195, U.S. 6 and U.S. 44.

• Blackstone River
• Ten Mile River
• Bucklin Brook

• List of rivers in Rhode Island
• Green Jacket Shoal, a ship graveyard at the mouth of the river