Stop River
Stop River (Medfield, Massachusetts) map.jpg
Stop River and environs
Physical characteristics
 • locationHighland Lake, Norfolk, MA
 • coordinates42°07′35″N 71°18′20″W / 42.12639°N 71.30556°W / 42.12639; -71.30556
 • location
Charles River, Medfield, MA
 • coordinates
42°10′25.2″N 71°19′08.4″W / 42.173667°N 71.319000°W / 42.173667; -71.319000Coordinates: 42°10′25.2″N 71°19′08.4″W / 42.173667°N 71.319000°W / 42.173667; -71.319000
Length9.3 miles (15.0 km)

The Stop River is a low and marshy stream in Medfield, Massachusetts, and partly forming the border between Norfolk and Walpole. The river rises near Highland Lake in Norfolk, flows 9.3 miles (15.0 km)[1] northwards to join the Charles River in Medfield, and ultimately drains into Boston Harbor.

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.


  1. ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed April 1, 2011