Around here
Around Great Miami River
Data Source: Recreation.gov · Source: USGS GNIS · Source: National Park Service. No claim to original U.S. Government works. · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)
About this river
Great Miami River is a 61.1 mile river near Morgan's Outdoor Adventures in Indiana. Streamflow is measured at the USGS gauge Great Miami River at Middletown OH (site 03272100). The National Hydrography Dataset places it at stream order 9. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1995 to 2026
Great Miami River typically runs highest in March, at a median 4,400 cfs, and lowest in September, at 744 cfs. The highest flow on record for any single day is 52,400 cfs, in 2025.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 2,850 | 1,600 to 5,730 |
| February | 2,850 | 1,920 to 5,410 |
| March | 4,400 | 2,650 to 7,970 |
| April | 4,025 | 2,620 to 7,260 |
| May | 3,420 | 2,250 to 6,420 |
| June | 2,700 | 1,645 to 4,680 |
| July | 1,560 | 1,060 to 2,480 |
| August | 912 | 721 to 1,330 |
| September | 744 | 576 to 1,100 |
| October | 778 | 568 to 1,320 |
| November | 1,050 | 677 to 2,220 |
| December | 1,720 | 1,010 to 4,580 |
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 31 years of record. Statistics published by the US Geological Survey for Great Miami River at Middletown OH (site 03272100). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
7 mapped launches sit in the mapped area of Great Miami River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Ohio River Launch ClubPublic
- Schmidt Field Park & Boat Launch/Schmidt Recreation ComplexPublic
- Mariners LandingPublic
- Great Miami Swamp at Shawnee LookoutGreat Miami RiverPublic
- Catalina HarborPublic
- Bicentennial Boat RampPublic
- Black St. Ramp - Combs ParkPublic
Made to print
Put Great Miami 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 Great Miami River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
