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Great Miami River at Dayton OH water level

River gauge, Great Miami River, Ohio, United States

Directions

Right now

Below flood stage

Water level

24.61ft Steady over the last 24 hours

Flow
1,140 cfs
30 40 Minor floodstage 41.00 ft Highest onrecord 36.00 ft

History

History
24.224.424.6ftOct 16Oct 17Oct 19Oct 21Oct 2324.224.424.6ftOct 16Oct 19Oct 23
Water level Forecast Minor flood stage

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 %.

RankLevelDate
136.00 ftJanuary 22, 1959
235.40 ftFebruary 27, 1929
335.21 ftDecember 23, 2013
434.33 ftJanuary 7, 2005
534.20 ftJanuary 22, 1937
634.00 ftMay 14, 1933
733.70 ftMarch 6, 1963
833.24 ftApril 6, 2025
933.10 ftDecember 31, 1990
1033.00 ftJune 14, 1958

Weather at the gauge

The forecast is not available right now.

Sunrise 07:52 AM Sunset 06:53 PM Daylight 11 hr, 1 min First quarter 57%

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

ParameterLast valueTime (UTC)Quality
Water level 24.61 ft 2026-10-19 07:30 Provisional
Flow 1,140 cfs 2026-10-19 07:30 Provisional

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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.