About this river
Rainy River is a 28.5 mile river near Rainy Lake Aquatics LLC in Minnesota. Streamflow is measured at the USGS gauge Rainy River at Manitou Rapids, MN (site 05133500). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1929 to 2026
Rainy River typically runs highest in May, at a median 17,500 cfs, and lowest in February, at 8,550 cfs. The highest flow on record for any single day is 75,600 cfs, in 2014.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 8,900 | 6,980 to 11,300 | |
| February | 8,550 | 6,590 to 10,500 | |
| March | 8,740 | 6,960 to 10,500 | |
| April | 13,050 | 9,135 to 19,700 | |
| May | 17,500 | 10,500 to 27,500 | |
| June | 17,350 | 9,815 to 30,550 | |
| July | 14,300 | 9,280 to 23,400 | |
| August | 9,740 | 6,220 to 13,300 | |
| September | 8,715 | 5,505 to 12,600 | |
| October | 8,940 | 5,940 to 13,600 | |
| November | 9,190 | 6,290 to 14,300 | |
| December | 9,450 | 5,990 to 13,100 |
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 98 years of record. Statistics published by the US Geological Survey for Rainy River at Manitou Rapids, MN (site 05133500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Rainy 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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