Ohio River at Portsmouth, OH
Is Ohio River at Portsmouth, OH flooding right now?
Ohio River at Portsmouth, OH measured 22.47 ft on 2026-09-11 01:00:00 UTC. That observation was 27.5 ft below its 50 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
22.47 ft
Streamflow
122,000 cfs
Minor flooding here begins at 50 ft, with major flooding at 66 ft. The highest crest on record was 74.23 ft on Wed, Jan 27, 1937.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 35 ft | 12.5 ft below |
| Minor flood | 50 ft | 27.5 ft below |
| Moderate flood | 57 ft | 34.5 ft below |
| Major flood | 66 ft | 43.5 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 74.23 ft | 1937-01-27 |
| 67.9 ft | 1913-03-31 |
| 66.26 ft | 1884-02-12 |
| 64.9 ft | 1945-03-09 |
| 64.1 ft | 1948-04-17 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Ohio River at Greenup Dam near Greenup, KY | 9.3 mi | Greenup County |
| Tygarts Creek near Greenup, KY | 11.6 mi | Greenup County |
| Upper Twin Creek at McGaw OH | 13.2 mi | Scioto County |
| Big Run at Wakefield OH | 16.8 mi | Pike County |
| Kinniconick Creek below Trace Creek at Tannery, KY | 17.5 mi | Lewis County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.