The Stillwater River is a river in the U.S. state of Rhode Island. It flows approximately .[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.
In addition to many unnamed tributaries, the following brooks feed the Stillwater: