About this river
Ottawa River is a 2.1 mile river near Coe Vanna Charters, LLC in Ohio. Streamflow is measured at the USGS gauge Ottawa River at University of Toledo, Toledo OH (site 04177000). The mapped line runs from 41.6851, -83.5669 to 41.6962, -83.5326. The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1945 to 2026
Ottawa River typically runs highest in March, at a median 130 cfs, and lowest in September, at 11 cfs. The highest flow on record for any single day is 3,500 cfs, in 1982.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 49 | 21 to 127 | |
| February | 54 | 21 to 141 | |
| March | 130 | 64 to 294 | |
| April | 121 | 65 to 253 | |
| May | 68 | 41 to 143 | |
| June | 42 | 24 to 110 | |
| July | 21 | 10 to 48 | |
| August | 14 | 7.3 to 31 | |
| September | 11 | 6.0 to 25 | |
| October | 13 | 7.6 to 38 | |
| November | 29 | 14 to 63 | |
| December | 47 | 19 to 120 |
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 53 years of record. Statistics published by the US Geological Survey for Ottawa River at University of Toledo, Toledo OH (site 04177000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Ottawa 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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