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South Nahanni River in Northwest Territories

River46.6 mi
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Around here

Around South Nahanni River

Figure of Eight Rapids20.1 mi10 mi

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Source: Canadian Geographical Names Database (NRCan), Open Government Licence - Canada

About this river

South Nahanni River is a 46.6 mile river. Streamflow is measured at the Water Survey of Canada gauge South Nahanni River above Virginia Falls (site 10EB001). Reach geometry comes from Natural Resources Canada's National Hydro Network.

Typical flow by month

1962 to 2019

South Nahanni River typically runs highest in June, at a median 27,228 cfs, and lowest in March, at 1,098 cfs. The highest flow on record for any single day is 79,458 cfs, in 1972.

Show the numbers
Typical flow by month at South Nahanni River above Virginia Falls, in cfs
MonthTypical (cfs)Usual range (cfs)
January1,4641,214 to 1,707
February1,2081,000 to 1,410
March1,098950 to 1,249
April1,107998 to 1,240
May6,4634,635 to 11,195
June27,22821,295 to 34,648
July17,67515,380 to 21,224
August13,22511,530 to 15,344
September8,3966,847 to 10,762
October4,9444,097 to 5,898
November2,2151,874 to 2,632
December1,8771,537 to 2,118

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 54 years of record. Statistics published by the US Geological Survey for South Nahanni River above Virginia Falls (site 10EB001). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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