About this river
Meramec River is a 15.5 mile river near Jadwin Canoe Rental in Missouri. Streamflow is measured at the USGS gauge Meramec River at Cook Station, MO (site 07010350). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1966 to 2026
Meramec River typically runs highest in April, at a median 139 cfs, and lowest in September, at 24 cfs. The highest flow on record for any single day is 22,800 cfs, in 2025.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 54 | 34 to 111 | |
| February | 71 | 38 to 139 | |
| March | 128 | 64 to 280 | |
| April | 139 | 79 to 241 | |
| May | 126 | 64 to 228 | |
| June | 49 | 30 to 76 | |
| July | 29 | 19 to 46 | |
| August | 26 | 17 to 40 | |
| September | 24 | 17 to 38 | |
| October | 27 | 20 to 35 | |
| November | 33 | 24 to 65 | |
| December | 46 | 30 to 92 |
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 34 years of record. Statistics published by the US Geological Survey for Meramec River at Cook Station, MO (site 07010350). 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 Meramec 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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