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Around South Nation River
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Source: USGS GNIS · Public land: USGS PAD-US
About this river
South Nation River is a 36.4 mile river. Streamflow is measured at the Water Survey of Canada gauge South Nation River at Spencerville (site 02LB007). Reach geometry comes from Natural Resources Canada's National Hydro Network.
Typical flow by month
1948 to 2025
South Nation River typically runs highest in April, at a median 276 cfs, and lowest in September, at 1.6 cfs. The highest flow on record for any single day is 3,602 cfs, in 1950.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 44 | 20 to 99 |
| February | 37 | 19 to 82 |
| March | 168 | 78 to 371 |
| April | 276 | 139 to 441 |
| May | 78 | 39 to 138 |
| June | 25 | 12 to 53 |
| July | 8.5 | 2.0 to 26 |
| August | 2.0 | 0.6 to 14 |
| September | 1.6 | 0.4 to 9.8 |
| October | 6.0 | 1.0 to 24 |
| November | 59 | 14 to 113 |
| December | 64 | 39 to 131 |
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 77 years of record. Statistics published by the US Geological Survey for South Nation River at Spencerville (site 02LB007). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put South Nation River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show South Nation River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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