French River River Levels

Last Updated: December 4, 2025

The French River is a major river in Ontario, Canada, stretching 110 km from Lake Nipissing to Georgian Bay.


Summary


Maximum discharge along the river is currently at the French R At N Grosvenordale reporting a streamflow rate of 191 cfs. This is also the highest stage along the French River, with a gauge stage of 7.42 ft at this location. This river is monitored from 3 different streamgauging stations along the French River, the highest being situated at an altitude of 475 ft, the French River Below Dam.

       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
French River Below Dam
USGS 01124350
3 cfs 0.66 ft
French River At Webster
USGS 01125000
7 cfs 4.30 ft
French R At N Grosvenordale
USGS 01125100
191 cfs 7.42 ft -4.02
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The French River (French: Rivière des Français, Ojibwe: Wemitigoj-Sibi) is a river in Central Ontario, Canada. It flows 110 kilometres (68 mi) from Lake Nipissing west to Georgian Bay. The river largely follows the boundary between the Parry Sound District and the Sudbury District, and in most contexts is considered the dividing line between Northern Ontario and Southern Ontario. The French River was designated a Canadian Heritage River in 1986.