Largest tributaries
The Seven Mile River or Sevenmile River is a 15.4 km long stream in central Massachusetts. It heads at Browning Pond, at the Oakham and Spencer border, and travels south through Spencer, following a short distance from State Route 31 (North Spencer Road). It crosses under Route 31 the highway becomes Pleasant Street, then continues south along Old Meadow Road and under State Route 9 near the junction of State Route 49. It then parallels Route 9 to its south until it joins the East Brookfield River between Lake Lashaway and Quaboag Pond.
