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Mississippi River water level at Alton today

How high is the Mississippi River at Alton today?

The Mississippi River at Alton read 18.51 ft at .

Level now

18.51 ft

Provisional

Where the water stands

That is below the action stage of 20 ft set by the National Weather Service.

18.51 ftAction stage: 20 ftMinor flood stage: 21 ftModerate flood stage: 24 ftMajor flood stage: 31 ft
The newest reading against the official levels and our records near it.
Table: where the water stands
LevelValue
Newest reading18.51 ft,
Action stage20 ft
Minor flood stage21 ft
Moderate flood stage24 ft
Major flood stage31 ft
Past day
-0.77 ft
Past week
+0.65 ft

The gauge reads the height of the water above a fixed zero, not the depth of the river.

Official levels

  • Action stage: 20 ft. The newest reading is 1.49 ft below it.Published by NOAA National Water Prediction Service (NWPS).
  • Minor flood stage: 21 ft. The newest reading is 2.49 ft below it.Published by NOAA National Water Prediction Service (NWPS).
  • Moderate flood stage: 24 ft. The newest reading is 5.49 ft below it.Published by NOAA National Water Prediction Service (NWPS).
  • Major flood stage: 31 ft. The newest reading is 12.49 ft below it.Published by NOAA National Water Prediction Service (NWPS).

Also on this water

About this gauge

Alton is a gauge on the Mississippi River in Illinois, United States.

It lies at 38.8872° N, 90.1839° W.

Its readings come from the National Weather Service (NWPS).

The newest reading is provisional: the source may still correct it.

The National Weather Service credits: U.S. Geological Survey; Observations courtesy of U.S. Geological Survey; Observations courtesy of U.S. Army Corps of Engineers.

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