The Stillwater River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in the U.S.

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 state of Rhode Island

Rhode Island

The state of Rhode Island and Providence Plantations, more commonly referred to as Rhode Island , is a state in the New England region of the United States. It is the smallest U.S. state by area...

. It flows approximately 6.1 miles (9.8 km). There are four dams along the river's length.

Course

The river is formed by the confluence of Cutler Brook with an unnamed stream, west of the village of Harmony

Harmony, Rhode Island

Harmony is a village and census-designated place in Glocester, Rhode Island, United States located on U.S. Route 44 .-Local sites and history:...

. The river flows in a southeasterly direction to Waterman Lake, then east past the village of Greenville

Greenville, Rhode Island

Greenville is a village and census-designated place in the town of Smithfield in Providence County, Rhode Island, United States. The population was 8,626 at the 2000 census...

. From there, the river flows in a northerly direction to Stillwater Reservoir where it meets the Woonasquatucket River

Woonasquatucket River

The Woonasquatucket River is a river in the U.S. state of Rhode Island. It flows approximately and drains a watershed of 130 km² ....

.

Crossings

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
    Route 5 (Rhode Island)
    -Route description:Route 5 takes the following route through the State:*Warwick: ; US 1 to Cranston city line**Greenwich Avenue and Lambert Lind Highway*Cranston: ; Warwick city line to Johnston town line**Oaklawn Avenue and Atwood Avenue...
    
    /116
    Route 116 (Rhode Island)
    -Route:Route 116 takes the following route through the State:*Coventry: ; Route 117 to Scituate town line**Knotty Oak Road*Scituate: ; Coventry town line to Glocester town line**North Road, East Road and West Greenville Road...
    
    )

Tributaries

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

• Cutler Brook
• Nine Foot Brook
• Reaper Brook