The Lees River or Lee's River, shown on federal maps as the Lee River, is a 2.9 miles (4.7 km) tidal river

Tidal river

A tidal river is a river, or more typically a stretch of a river, whose flow and level is influenced by tides. An example of a tidal river is the portion of the Connecticut River flowing from Windsor Locks, Connecticut, to the Atlantic Ocean. The Brisbane River, which flows into the Pacific Ocean...

 that forms part of the boundary between Swansea

Swansea, Massachusetts

Swansea is a town in Bristol County in southeastern Massachusetts.It is located at the mouth of the Taunton River, just west of Fall River, 47 miles south of Boston; and 12 miles southeast of Providence, Rhode Island....

 and Somerset, Massachusetts

Somerset, Massachusetts

Somerset is a town in Bristol County, Massachusetts, United States. The population was 18,234 at the 2000 census. It is the birthplace and hometown of Clifford Milburn Holland , the chief engineer and namesake of the Holland Tunnel in New York City....

. It flows south to drain into Mount Hope Bay

Mount Hope Bay

Mount Hope Bay is a tidal estuary located at the mouth of the Taunton River on the Massachusetts and Rhode Island border. It is an arm of Narragansett Bay. The bay is named after Mount Hope, a small hill located on its western shore in what is now Bristol, Rhode Island. It flows into the East...

.

The first documented local shipyard was established on the river between 1707 and 1712 by Samuel Lee. Today the river is designated as a Class A, "outstanding resource" water.