River stage
Dayton, Great Miami River
- River level
- 24.56 ft
- Status
- Below flood stage
- 7-day change
- -0.32 ft
- Recent high
- 29.86 ft
- Recent low
- 23.83 ft
Last reported 2026-10-13 | NWS DTNO1
- 30-day change
- -0.32 ft
- Average
- 25.50 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 36.00 ft
In brief
The Great Miami River at Dayton, OH read 24.56 ft on Oct 13, 2026, 4.94 ft below action stage. That is 0.32 ft lower than 30 days earlier.
Source: National Weather Service gauge DTNO1
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 36.00 ft | 1959-01-22 |
| 2 | 35.40 ft | 1929-02-27 |
| 3 | 35.21 ft | 2013-12-23 |
| 4 | 34.33 ft | 2005-01-07 |
| 5 | 34.20 ft | 1937-01-22 |
| 6 | 34.00 ft | 1933-05-14 |
| 7 | 33.70 ft | 1963-03-06 |
| 8 | 33.24 ft | 2025-04-06 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 26.50 ft
Flooding begins along the bike trail along river in the city.
- 30.00 ft
Flooding occurs near Rip Rap Road between Bridgewater and Little York Roads near Huber Heights. The MCD flood protection system provides protection to selected areas in the City of Dayton up to a river stage of 47.4 feet. This system provides flood reduction from four dams and reduced risk in leveed areas.
- 33.00 ft
Island Metro Park and Helena Street experience some flooding as well as portions of Rip Rap Road near Huber Heights. The MCD flood protection system provides protection to the City of Dayton up to a river stage of 47.4 feet. This system includes dams and levees along the Miami River and tributaries in the Dayton area. In addition, some groundwater flooding may occur due to the high river near the University of Dayton.
- 34.00 ft
Island Metro Park becomes inundated as well as Helena Street. Several inches of water cover sections of Rip Rap Road near Huber Heights. While there is some groundwater flooding problems near University of Dayton due to the high river level the city of Dayton is protected by a flood wall up to 47.4 feet.
- 39.40 ft
This is the FEMA 1 percent flood elevation level. The Miami Conservancy District flood protection system provides protection to the City of Dayton up to a river stage of 47.4 feet. This system includes dams and levees on the Great Miami and tributaries. There is flooding outside of flood protected areas along Rip Rap Road in Huber Heights.
- 40.00 ft
A stop log wall must be installed at Riverscape to prevent the levee in the Riverscape area from being overtopped. The Miami Conservancy District flood protection system provides protection to the City of Dayton up to a river stage of 47.4 feet. There is some flooding outside of flood protected areas such as along Rip Rap Road in Huber Heights.
- 41.00 ft
Low lying areas outside of the floodwall experience flooding. Several feet of water now flood Island Metropark at east Helena Street as well as sections of Rip Rap Road near Huber Heights. University of Dayton operates pumps to keep Arena floor from flooding. Much of the city is protected by levees to a stage of 47.4 feet.
- 42.00 ft
This is equivalent of the FEMA 0.2% or 500 year flood. Flood protection by MCD protects to a stage of 47.4 feet. Low-lying areas in communities south of Dayton along tributaries of the Great Miami River experience flooding, especially from Moraine to near Miamisburg.
- 47.40 ft
This is the top of the levee system protecting Dayton from Great Miami River flooding. River stages exceeding this level would result in widespread catastrophic flooding within Dayton.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Great Miami River flooding at Dayton?
No. The Great Miami River at Dayton is at 24.56 ft, 4.94 ft below action stage.
What is the flood stage at Dayton?
The National Weather Service sets action stage 29.5 ft, minor flooding 41 ft, moderate flooding 44 ft and major flooding 48 ft.
What is the highest the Great Miami River has been at Dayton?
The highest crest on record is 36.0 ft, on 1959-01-22.
Is the Great Miami River high or low right now at Dayton?
At 24.56 ft it is higher than 24% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge DTNO1); daily history from the U.S. Geological Survey (site 03270500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.