The Stop River is a low and marshy stream in

Medfield, Massachusetts Medfield is a town in Norfolk County, Massachusetts, United States. The population was 12,799 according to the 2020 United States Census. It is a community about southwest of Boston, Massachusetts, which is a 40-minute drive to Boston's fina ...

, and partly forming the border between

Norfolk Norfolk () is a ceremonial and non-metropolitan county in East Anglia in England. It borders Lincolnshire to the north-west, Cambridgeshire to the west and south-west, and Suffolk to the south. Its northern and eastern boundaries are the No ...

and Walpole. The river rises near Highland Lake in

, flows U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
accessed April 1, 2011 northwards to join the

Charles River The Charles River ( Massachusett: ''Quinobequin)'' (sometimes called the River Charles or simply the Charles) is an river in eastern Massachusetts. It flows northeast from Hopkinton to Boston along a highly meandering route, that doubles b ...

in Medfield, and ultimately drains into

Boston Harbor Boston Harbor is a natural harbor and estuary of Massachusetts Bay, and is located adjacent to the city of Boston, Massachusetts. It is home to the Port of Boston, a major shipping facility in the northeastern United States. History ...

. The Medfield Rhododendrons reservation, operated by The Trustees of Reservations, is an important and rare stand of ''Rhododendron maximum'' along the river in Woodridge Street, Medfield.

References

New England Wadeable Streams (NEWS)

{{authority control Rivers of Norfolk County, Massachusetts Rivers of Massachusetts