Mississippi River at Grafton, IL
Is Mississippi River at Grafton, IL flooding right now?
Not yet — Mississippi River at Grafton, IL is at 18.59 ft, 1.4 ft below its 20 ft flood stage but at the action level, as of 34 min ago.
Gauge height
18.59 ft
Streamflow
255,000 cfs
Minor flooding here begins at 20 ft, with major flooding at 29 ft. The highest crest on record was 38.17 ft on Sun, Aug 1, 1993.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 18 ft | 0.6 ft ABOVE |
| Minor flood | 20 ft | 1.4 ft below |
| Moderate flood | 24 ft | 5.4 ft below |
| Major flood | 29 ft | 10.4 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 38.17 ft | 1993-08-01 |
| 35.17 ft | 2019-06-07 |
| 33.12 ft | 1973-04-28 |
| 32.13 ft | 1844-06-18 |
| 32.1 ft | 2019-05-07 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| PIASA CREEK NEAR MELVILLE, IL | 8.5 mi | Madison County |
| Mill Creek near Florissant, MO | 11.2 mi | St. Louis County |
| Missouri River at St. Charles, MO | 12.7 mi | St. Louis County |
| Cowmire Creek at Bridgeton, MO | 14.1 mi | St. Louis County |
| Coldwater Creek near Black Jack, MO | 14.1 mi | St. Louis 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.