Assabet River

Last Updated: April 25, 2026

Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Assabet River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Assabet River, the highest being situated at an altitude of ft, the .

The Assabet River is a 31-mile-long river that flows through eastern Massachusetts.


15-Day Long Term Forecast


       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Assabet River At Maynard
USGS 01097000
88 cfs 2.22 ft -3.02
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Assabet River is a small river about 20 miles (30 km) west of Boston, Massachusetts, United States. The river is 34.4 miles (55.4 km) long. OARS: the Organization for the Assabet, Sudbury and Concord Rivers, headquartered in West Concord, Massachusetts, is a non-profit organization dedicated to the preservation, protection, and enhancement of the natural and recreational features of these three rivers and their watershed. The Assabet and Sudbury Rivers merge in Concord to become the Concord River.