Great Miami River at Dayton OH water level
River gauge, Great Miami River, Ohio, United States
Right now
Below flood stage
Water level
- Flow
- 1,140 cfs
History
The forecast expects the river to fall to 24.20 ft by Thursday, October 22 at 08:00 PM. Issued Sunday, October 18 at 09:24 AM by NOAA National Weather Service.
What this means
The Great Miami River at Dayton OH is at 24.61 ft, in the normal range.
It is 16.39 ft below the flood stage of 41.00 ft.
It has barely moved over the past 24 hours. The forecast expects the river to fall to 24.20 ft by Thursday, October 22 at 08:00 PM. In the last month it has stayed between 24.52 ft and 24.62 ft.
Judged against the official flood stage for this gauge. How to read levels
Key numbers
- Highest on record
- 36.00 ftJanuary 22, 1959
- Forecast peak
- 24.60 ftMonday, October 19 at 02:00 AM
Floating and fishing near Great Miami River at Dayton OH
Normal flows mean predictable rapids and good access at most put-ins.
Flood stage here is 41.00 ft, 16.39 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.
What happens at each level
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 26.50 ft
- Flooding begins along the bike trail along river in the city.
- 24.61 ft
- Right now
Impact statements from the U.S. National Weather Service.
Highest crests on record
Chance of at least minor flooding in October to December: < 5 %.
| Rank | Level | Date |
|---|---|---|
| 1 | 36.00 ft | January 22, 1959 |
| 2 | 35.40 ft | February 27, 1929 |
| 3 | 35.21 ft | December 23, 2013 |
| 4 | 34.33 ft | January 7, 2005 |
| 5 | 34.20 ft | January 22, 1937 |
| 6 | 34.00 ft | May 14, 1933 |
| 7 | 33.70 ft | March 6, 1963 |
| 8 | 33.24 ft | April 6, 2025 |
| 9 | 33.10 ft | December 31, 1990 |
| 10 | 33.00 ft | June 14, 1958 |
Weather at the gauge
The forecast is not available right now.
Map
Other gauges on the Great Miami River
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Great Miami River at Sidney OHRiver gauge, Great Miami River | 1.30 ft | Below flood stage | −0.26 ft | 36 mi |
| Great Miami River at Piqua OHRiver gauge, Great Miami River | 1.58 ft | Below flood stage | +0.02 ft | 27 mi |
| Great Miami River at Troy OHRiver gauge, Great Miami River | 2.77 ft | Below flood stage | +0.09 ft | 18 mi |
| Great Miami River at Taylorsville OHRiver gauge, Great Miami River | 3.74 ft | Below flood stage | +0.33 ft | 8 mi |
| Great Miami River at Miamisburg OHRiver gauge, Great Miami River | 4.24 ft | Below flood stage | −0.02 ft | 10 mi |
| Great Miami River at Franklin OHRiver gauge, Great Miami River | 1.17 ft | Below flood stage | −0.03 ft | 15 mi |
| Great Miami River at Middletown OHRiver gauge, Great Miami River | 2.53 ft | Below flood stage | −0.03 ft | 20 mi |
| Great Miami River at Hamilton OHRiver gauge, Great Miami River | 63.15 ft | Below flood stage | −0.02 ft | 33 mi |
| Great Miami River at Miamitown OHRiver gauge, Great Miami River | 1.43 ft | High | −0.03 ft | 47 mi |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Wolf Creek at Dayton OHRiver gauge, Wolf Creek | 23.0 cfs | Normal | −1.5 cfs | 2.1 mi |
| G Miami River at Sellars Rd at West Carrollton OHRiver gauge, G Miami River | 8.04 ft | Very high | −0.01 ft | 5.6 mi |
| Mad River near Dayton OHRiver gauge, Mad River | 2.94 ft | Below flood stage | −0.03 ft | 6.2 mi |
| Holes Creek near Kettering OHRiver gauge, Holes Creek | 7.2 cfs | Normal | −1.0 cfs | 8 mi |
| Stillwater River at Englewood OHRiver gauge, Stillwater River | 3.03 ft | Below flood stage | −0.02 ft | 9 mi |
| Twin Creek near Germantown OHRiver gauge, Twin Creek | 1.65 ft | Below flood stage | −0.07 ft | 14 mi |
| Little Miami River near Oldtown OHRiver gauge, Little Miami River | 72.0 cfs | High | −4.1 cfs | 14 mi |
Questions and answers
What is flood stage for the Great Miami River at Dayton OH?
The official flood stage is 41.00 ft. The level is currently 16.39 ft below it.
Is gage height the same as water depth?
No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.
What is the water level of Great Miami River at Dayton OH today?
On Oct 19, 2026, 03:30 AM EDT, the water level was 24.61 ft. Steady over the last 24 hours.
Is Great Miami River at Dayton OH rising or falling?
Steady over the last 24 hours.
Is the level of Great Miami River at Dayton OH normal?
Below flood stage. Judged against the official flood stage for this gauge.
What is the highest water level ever recorded at Great Miami River at Dayton OH?
The highest level on record is 36.00 ft on January 22, 1959.
Is Great Miami River at Dayton OH expected to rise?
The forecast expects the river to fall to 24.20 ft by Thursday, October 22 at 08:00 PM.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:03270500(Agency page)- Coordinates
39.76534, -84.19744(WGS84)- Vertical datum
- NAVD88
- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 24.61 ft | 2026-10-19 07:30 | Provisional |
| Flow | 1,140 cfs | 2026-10-19 07:30 | Provisional |
Download
Embed this gauge
Add a live card for this gauge to your website. It updates on its own and links back here.
How to cite
U.S. Geological Survey: Great Miami River at Dayton OH (usgs:03270500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/ohio/great-miami-river-at-dayton-oh
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer