Marsh River

Last Updated: April 14, 2026

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

The Marsh River is a 41-mile-long river located in eastern Maine.


15-Day Long Term Forecast


       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Marsh River Near Shelly
USGS 05067500
2 cfs 11.53 ft 18.32
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Marsh River is a 3.9-mile-long (6.3 km) tidal river in Newcastle, Maine, in the United States. It is a tributary of the Sheepscot River.
The Marsh River is formed at the confluence of Deer Meadow Brook and the outlet of Sherman Lake in the western corner of Newcastle and flows west, north, and west again to join the Sheepscot at the town boundary between Newcastle and Wiscasset.