Red Flag Warning
2025-12-17T18:00:00-07:00

* AFFECTED AREA...Fire Weather Zones 241, 242, 243, 245 and 246. * TIMING...Until 6 PM MST this evening. * WINDS...West 15 to 30 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 16 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.


Charles River River Levels

Last Updated: December 17, 2025

The Charles River is a 80-mile long river in Massachusetts that runs from Hopkinton to Boston and empties into the Atlantic Ocean.


Summary

Total streamflow across the Charles River was last observed at 127 cfs, and is expected to yield approximately 252 acre-ft of water today; about 9% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,449 cfs, with recent peaks last observed on 2024-01-14 when daily discharge volume was observed at 5,509 cfs.

Maximum discharge along the river is currently at the Charles River At Dover reporting a streamflow rate of 127 cfs. However, the streamgauge with the highest stage along the river is the Charles River At Wellesley with a gauge stage of 3.02 ft. This river is monitored from 4 different streamgauging stations along the Charles River, the highest being situated at an altitude of 129 ft, the Charles River At Medway.

River Details

Last Updated 2025-12-17
Discharge Volume 252 ACRE-FT
Streamflow 127.0 cfs
-108.0 cfs (-45.96%)
Percent of Normal 8.76%
Maximum 5,509.0 cfs
2024-01-14
Seasonal Avg 1,449 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Charles River At Medway
USGS 01103280
104 cfs 1.05 ft 96.23
Charles River At Dover
USGS 01103500
127 cfs 1.05 ft -3.05
Charles River At Wellesley
USGS 01104200
96 cfs 3.02 ft 3.35
Charles River At Waltham
USGS 01104500
94 cfs 1.16 ft 0
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Charles River (sometimes called the River Charles or simply the Charles) is an 80-mile-long (129 km) long river in eastern Massachusetts. From its source in Hopkinton the river's mouth is northeast of its headwaters, though it follows a highly meandering route, doubling back on itself several times and traveling through 23 cities and towns before reaching the Atlantic Ocean at Boston. The Native-American name for the Charles River was Quinobequin, meaning "meandering".