Stillwater River (Rhode Island)

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The Stillwater River is a river in the U.S. state of Rhode Island. It flows approximately 6.1 miles (9.8 km).[1] There are four dams along the river's length.[2]


The river is formed by the confluence of Cutler Brook with an unnamed stream, west of the village of Harmony. The river flows in a southeasterly direction to Waterman Lake, then east past the village of Greenville. From there, the river flows in a northerly direction to Stillwater Reservoir where it meets the Woonasquatucket River.


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

  • Glocester
    • Sawmill Road
  • Smithfield
    • West Greenville Road
    • Putnam Pike (U.S. 44)
    • Austin Avenue
    • Deerfield Drive
    • Pleasant View Avenue (RI 5/116)


In addition to many unnamed tributaries, the following brooks feed the Stillwater:

  • Cutler Brook
  • Nine Foot Brook
  • Reaper Brook

See also[edit]


  1. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011
  2. ^ Governor's Task Force on Dam Safety and Maintenance – Final Report, January 2001