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Great Miami River at Hamilton OH water level

River gauge, Great Miami River, Ohio, United States

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Right now

Below flood stage

Water level

63.16ft Steady over the last 24 hours

Flow
1,840 cfs
Water temperature
59 °F
65 70 75 Highest onrecord 76.60 ft Minor floodstage 75.00 ft

History

History
63.063.163.2ftOct 16Oct 17Oct 19Oct 21Oct 2363.063.163.2ftOct 16Oct 19Oct 23
Water level Forecast Minor flood stage

The forecast expects the river to fall to 63.00 ft by Thursday, October 22 at 02:00 PM. Issued Sunday, October 18 at 09:24 AM by NOAA National Weather Service.

What this means

The gauge at Great Miami River at Hamilton OH reads 63.16 ft, a normal level.

It is 11.84 ft below the flood stage of 75.00 ft.

The level has held steady over the past 24 hours. The forecast expects the river to fall to 63.00 ft by Thursday, October 22 at 02:00 PM. Over the past 30 days it has moved between 63.15 ft and 63.18 ft.

The sensor also reports a water temperature of 59 °F.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record
76.60 ftMarch 19, 1943
Forecast peak
63.20 ftMonday, October 19 at 08:00 AM

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 75.00 ft, still 11.84 ft away.

What happens at each level

90.00 ft
Water would overtop levees on the south side of Hamilton. Water levels exceeding 90 feet would top all levees protecting the business district resulting in major flooding near the river channel through the entire city. Major flooding occurs, especially near New Miami and Ross, where homes and businesses along the river are suffering major inundation.
89.00 ft
This elevation is at the top of some levees protecting mainly the southern areas of Hamilton. In addition to major inundation of communities such as New Miami and near Ross, river stages above this level would inundate some areas of Hamilton south of Pershing Avenue along and near Neilan Boulevard. Widespread inundation occurs near Joyce Park and Joe Nuxhall Lane.
84.00 ft
Flooding worsens in lowland areas in southern Butler County between State Route 128 and the Great Miami River. Flooding also worsens along the river near Ross. The City of Hamilton itself is protected from river flooding up to 89 feet for locations in the southern part of the city, with most of the city protected at stages up to 90 feet.
82.00 ft
Lowland areas in southern Butler County between State Route 128 and the Great Miami River become flooded. Flooding also occurs along the river near Ross. The City of Hamilton itself is protected from river levels up to 89 feet in the southern sections of the city, while most of the city is protected up to 90 feet.
77.00 ft
Locations along the river mainly south of the City of Hamilton become flooded. Flooding continues to impact New Miami and Ross. Southern portions of the City of Hamilton are protected by flood walls up to 89 feet, with the majority of the city protected up to a stage of 90 feet.
75.00 ft
Lowland areas south of Hamilton to Ross continue to flood. Evacuations are possible near New Miami and near Ross. The City of Hamilton itself is protected from river levels up to 89 feet for locations in the southern part of the city, with most of the city protected at stages up to 90 feet.
74.00 ft
Lowland flooding begins about one mile north of High Street in Hamilton and near Ross, about five miles downstream. Low-lying homes near New Miami and other low-lying areas along the river channel are impacted. The City of Hamilton itself is protected from river levels up to 89 feet for locations in the southern part of the city, with most of the city protected at stages up to 90 feet.
63.16 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
176.60 ftMarch 19, 1943
276.50 ftFebruary 26, 1929
376.33 ftJanuary 22, 1937
475.95 ftJanuary 27, 1952
575.84 ftJanuary 5, 2004
675.57 ftJanuary 6, 2005
775.41 ftMay 24, 1968
875.15 ftMarch 19, 2008
974.96 ftMarch 5, 1963
1074.50 ftJanuary 6, 1949

Weather at the gauge

Rain in the last 3 days: 0.04 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 66° 33° – Wind 5 mph
19 Mon 69° 39° – Wind 6 mph
20 Tue 71° 42° – Wind 6 mph
21 Wed 69° 45° – Wind 6 mph
22 Thu 67° 45° – Wind 7 mph
23 Fri 69° 45° – Wind 8 mph
24 Sat 72° 46° – Wind 6 mph

Forecast: Open-Meteo

Sunrise 07:53 AM Sunset 06:55 PM Daylight 11 hr, 2 min First quarter 59%

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 1.26 ft Below flood stage −0.31 ft 66 mi
Great Miami River at Piqua OHRiver gauge, Great Miami River 1.53 ft Below flood stage −0.12 ft 56 mi
Great Miami River at Troy OHRiver gauge, Great Miami River 2.73 ft Below flood stage +0.04 ft 49 mi
Great Miami River at Taylorsville OHRiver gauge, Great Miami River 3.74 ft Below flood stage +0.36 ft 40 mi
Great Miami River at Dayton OHRiver gauge, Great Miami River 24.62 ft Below flood stage +0.03 ft 33 mi
Great Miami River at Miamisburg OHRiver gauge, Great Miami River 4.23 ft Below flood stage −0.01 ft 23 mi
Great Miami River at Franklin OHRiver gauge, Great Miami River 1.16 ft Below flood stage −0.01 ft 19 mi
Great Miami River at Middletown OHRiver gauge, Great Miami River 2.53 ft Below flood stage −0.03 ft 12 mi
Great Miami River at Miamitown OHRiver gauge, Great Miami River 1.42 ft High −0.04 ft 14 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
West Fork Mill Creek Reservoir near Greenhills OHReservoir, West Fork Mill Creek Reservoir 675.21 ft Normal −0.08 ft 10 mi
Mill Creek at Kemper Road at Sharonville OHRiver gauge, Mill Creek 3.40 ft Normal −0.06 ft 10 mi
Mill Creek at East Sharon Rd at Sharonville OHRiver gauge, Mill Creek 17.6 cfs Normal −5.4 cfs 11 mi
Mill Creek at Evendale OHRiver gauge, Mill Creek 4.68 ft Below flood stage −0.07 ft 12 mi
Mill Creek at Reading OHRiver gauge, Mill Creek 5.13 ft High −0.04 ft 14 mi
Mill Creek at Carthage OHRiver gauge, Mill Creek 44.8 cfs Normal −6.7 cfs 14 mi
Sevenmile Creek at Camden OHRiver gauge, Sevenmile Creek 16.6 cfs Normal −0.9 cfs 17 mi

Questions and answers

What is flood stage for the Great Miami River at Hamilton OH?

The official flood stage is 75.00 ft. The level is currently 11.84 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 Hamilton OH today?

On Oct 19, 2026, 09:15 AM EDT, the water level was 63.16 ft. Steady over the last 24 hours.

Is Great Miami River at Hamilton OH rising or falling?

Steady over the last 24 hours.

Is the level of Great Miami River at Hamilton 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 Hamilton OH?

The highest level on record is 76.60 ft on March 19, 1943.

Is Great Miami River at Hamilton OH expected to rise?

The forecast expects the river to fall to 63.00 ft by Thursday, October 22 at 02:00 PM.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:03274000 (Agency page)
Coordinates
39.39117, -84.57217 (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 63.16 ft 2026-10-19 13:15 Provisional
Flow 1,840 cfs 2026-10-19 13:15 Provisional
Water temperature 59 °F 2026-10-19 13:00 Provisional

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How to cite

U.S. Geological Survey: Great Miami River at Hamilton OH (usgs:03274000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/ohio/great-miami-river-at-hamilton-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.