Great Miami River at Miamisburg, OH
River level and flood forecast · Montgomery County
Normal4.3 ftas of Mon 4:30 PM
The river is 11.7 ft below flood stage (16 ft).
Forecast to fall to 3.9 ft by Sat, Oct 17, 8 AM.
Flow: 1,220 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 10:22 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 27 ft |
| Moderate flood stage | 23 ft |
| Flood stage | 16 ft |
| Action stage | 12 ft |
| Record crest (January 21, 1959) | 20.65 ft |
What floods at each level
From the National Weather Service, highest first.
- 27.4 ftThis is the top of the planned flood protection. West Carrollton is significantly flooded, while only low lying homes and businesses in Miamisburg are flooded. Significant flooding occurs along and east of Yale Avenue, Woodlawn Avenue and Western Avenue near Chatauqua. Low lying flooding also occurs along Janet Avenue. Stretches of Dayton Cincinnati Pike are also flooded.
- 27 ftThis is within inches of the top of planned flood protection. While West Carrollton is already incurring major flooding, the floodwall protecting areas of the city north of Central Avenue are in danger of flooding. Significant flooding occurs along and east of Yale Avenue, Woodlawn Avenue and Western Avenue near Chatauqua. Low lying flooding also occurs along Janet Avenue. Stretches of Dayton Cincinnati Pike are also flooded.
- 24 ftThis is the FEMA 1 percent flood. In Chauquatua, areas near and east of Yale, Woodlawn and Western Avenues flood, with the low lying homes also flooded. Flooding also occurs along Janet Avenue and Dayton Cincinnati Pike. The Miamisburg water plant floods. In West Carrollton, substantial flooding occurs to the southwest of Miami Avenue, as well in the Gibbons Road and Savoy Avenue area, with dozens of homes flooded. Most of Miamisburg and West Carrollton are protected to a stage of 27.4 feet.
- 22 ftFlooding continues along the river in low areas of West Carrollton and south of Miamisburg to near Chautauqua. Properties near Squire Street, Circle Drive and West Main Street in West Carrollton flood. Low-lying roads near the river continue to flood. Flooded roads include Dayton-Cincinnati Pike between Brenner and Chautauqua Roads, portions of Lower Miamisburg Road, and upper River Road from Soldier Home Road to areas just south of Dayton.
- 20 ftStretches of Upper River Road are flooded, as well as low lying areas close the river in Chautauqua, mainly near Cromer Boulevard.
- 16 ftLowland flooding occurs from south of Miamisburg to Franklin, Carlisle, Trenton and New Miami. Water begins to spill onto low-lying roadways, mainly along portions of Dayton-Oxford Road.
Highest crests on record
- 20.65 ft — January 21, 1959
- 19.36 ft — March 6, 1963
- 18.15 ft — January 7, 2005
- 17.9 ft — December 23, 2013
- 17.04 ft — April 7, 2025
Recent crests: 17.04 ft (April 7, 2025) · 16.95 ft (March 20, 2020) · 16.38 ft (April 5, 2018) · 16.18 ft (February 25, 2018) · 14.79 ft (December 28, 2015)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MMGO1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.