Mousam 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 Mousam River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Mousam River, the highest being situated at an altitude of ft, the .

The Mousam River is a 29-mile-long river in southern Maine that flows from its headwaters in Shapleigh to its mouth at Kennebunkport.


15-Day Long Term Forecast


       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Mousam River Near West Kennebunk
USGS 01069500
159 cfs 1.31 ft -24.64
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Mousam River is a 29.7-mile-long (47.8 km) river in York County, Maine, United States. Its primary source is Mousam Lake, located between the towns of Shapleigh and Acton, and it flows into the Atlantic Ocean just west of Kennebunk Beach. It flows through the towns of Shapleigh, Sanford and Kennebunk.