Great Miami River at Dayton OH

Montgomery County, Ohio · USGS gauge 03270500 · NWS DTNO1 · Great Miami River flood status · Ohio river levels

Nearby: river levels near Dayton · river levels near Miamisburg

Is Great Miami River at Dayton OH flooding right now?

Great Miami River at Dayton OH measured 24.80 ft on 2026-09-11 01:30:00 UTC. That observation was 16.2 ft below its 41 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
24.80 ft
as of 48 min ago
Streamflow
1,230 cfs
data refreshed 1 min ago

Minor flooding here begins at 41 ft, with major flooding at 48 ft. The highest crest on record was 36 ft on Thu, Jan 22, 1959.

Flood forecast

NWS forecast, issued 13 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

CategoryStageCurrent distance
Action29.5 ft4.7 ft below
Minor flood41 ft16.2 ft below
Moderate flood44 ft19.2 ft below
Major flood48 ft23.2 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
36 ft1959-01-22
35.4 ft1929-02-27
35.21 ft2013-12-23
34.33 ft2005-01-07
34.2 ft1937-01-22

Nearby gauges

GaugeDistanceCounty
Wolf Creek at Dayton OH2.1 miMontgomery County
G Miami River at Sellars Rd at West Carrollton OH5.6 miMontgomery County
Mad River near Dayton OH6.2 miGreene County
Holes Creek near Kettering OH7.7 miMontgomery County
Great Miami River at Taylorsville OH7.8 miMontgomery County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast