The river begins in name just south of Old Forge Road in Warwick where the river becomes the southern boundary of Potowomut Neck, an exclave of Warwick. It flows roughly northeast between Warwick and North Kingstown until its mouth at Narragansett Bay.
Old Forge Road in Warwick is the only crossing over the Potowomut River.
The Potowomut River has no named or unnamed tributaries.
- U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011
- Maps from the United States Geological Survey
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