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French River in Ontario

River30.6 mi
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Around here

Around French River

Lower Chaudiere Rapids0.3 miUpper Chaudiere Rapids0.7 mi10 mi

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Source: Canadian Geographical Names Database (NRCan), Open Government Licence - Canada · Public land: USGS PAD-US

About this river

French River is a 30.6 mile river. Streamflow is measured at the Water Survey of Canada gauge French River below Portage Dam (site 02DD027). Reach geometry comes from Natural Resources Canada's National Hydro Network.

Typical flow by month

2014 to 2025

French River typically runs highest in November, at a median 6,242 cfs, and lowest in August, at 659 cfs. The highest flow on record for any single day is 8,652 cfs, in 2019.

Show the numbers
Typical flow by month at French River below Portage Dam, in cfs
MonthTypical (cfs)Usual range (cfs)
January4,5914,467 to 4,873
February3,5053,213 to 3,619
March2,9652,720 to 3,251
April5,3593,740 to 6,432
May6,0564,326 to 6,736
June2,1631,192 to 2,863
July1,300643 to 2,265
August659536 to 1,130
September991648 to 2,245
October4,3082,223 to 6,498
November6,2423,973 to 6,701
December6,1275,544 to 6,401

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 10 years of record. Statistics published by the US Geological Survey for French River below Portage Dam (site 02DD027). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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