About this river
Mad River is a 15.4 mile river near Whitewater Warehouse Inc in Ohio. Streamflow is measured at the USGS gauge Mad River near Dayton OH (site 03270000). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1974 to 2026
Mad River typically runs highest in April, at a median 872 cfs, and lowest in September, at 325 cfs. The highest flow on record for any single day is 11,000 cfs, in 2018.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 597 | 419 to 996 | |
| February | 666 | 480 to 1,050 | |
| March | 843 | 602 to 1,310 | |
| April | 872 | 621 to 1,180 | |
| May | 752 | 576 to 1,110 | |
| June | 611 | 446 to 915 | |
| July | 479 | 361 to 752 | |
| August | 355 | 279 to 460 | |
| September | 325 | 255 to 425 | |
| October | 352 | 286 to 455 | |
| November | 399 | 308 to 603 | |
| December | 500 | 337 to 852 |
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 52 years of record. Statistics published by the US Geological Survey for Mad River near Dayton OH (site 03270000). 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 Mad 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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