Oyster River River Levels

Last Updated: December 4, 2025

The Oyster River, located in southeastern New Hampshire, is approximately 17 miles long and flows through the towns of Durham, Madbury, and Lee before emptying into the Great Bay Estuary.


Summary

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

       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Oyster River Near Durham
USGS 01073000
4 cfs 0.98 ft 0
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Oyster River is a tributary of the Saint George River in Knox County, Maine. From its source (44°11′29″N 69°09′42″W) in Rockport, the river runs 12.5 miles (20.1 km) south and southwest to its confluence with the Saint George. Its lower third forms the border between Warren and Thomaston.