Great Miami River at Hamilton OH water level
River gauge, Great Miami River, Ohio, United States
Right now
Below flood stage
Water level
- Flow
- 1,840 cfs
- Water temperature
- 59 °F
History
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 %.
| Rank | Level | Date |
|---|---|---|
| 1 | 76.60 ft | March 19, 1943 |
| 2 | 76.50 ft | February 26, 1929 |
| 3 | 76.33 ft | January 22, 1937 |
| 4 | 75.95 ft | January 27, 1952 |
| 5 | 75.84 ft | January 5, 2004 |
| 6 | 75.57 ft | January 6, 2005 |
| 7 | 75.41 ft | May 24, 1968 |
| 8 | 75.15 ft | March 19, 2008 |
| 9 | 74.96 ft | March 5, 1963 |
| 10 | 74.50 ft | January 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.
Forecast: Open-Meteo
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
| Parameter | Last value | Time (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 |
Download
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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.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer