RIVER GAUGE · MISSISSIPPI RIVER
Mississippi River at New Boston
Mercer County, Illinois
Water level3.70 ft
Flow33,900 cfs
Last readingSep 16, 2026, 5:10 PM UTC (last recorded)
Action14 ft
Minor flood15 ft
Moderate flood16.5 ft
Major flood18.5 ft
The past week
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What floods at each level
- 26 ft
Water overtops the levee at L&D 17.
- 21.1 ft
Water overtops the upper spillway at Lake Odessa.
- 21 ft
Water affects grain elevators in New Boston. Water overtops the upper lock wall of L&D 17.
- 20.6 ft
The Lake Odessa levee overtops.
- 19.2 ft
Water overtops the spillway at the south end of Lake Odessa.
- 18.1 ft
Lock and Dam 17 is closed.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jul 8, 1993 | 25.9 ft | — |
| Jun 16, 2008 | 25.2 ft | — |
| Jun 1, 2019 | 24.42 ft | 332,390 cfs |
More on Mississippi River
UpstreamMississippi River at Muscatine
DownstreamMississippi River at Keithsburg
Mississippi River at Mel Price (Alton) Lock and Dam
Mississippi River at Alton
Mississippi River at Chester
Mississippi River at Fulton
Mississippi River above Grand Tower
Mississippi River at Gladstone
Mississippi River at Grafton
Mississippi River at Illinois City
Mississippi River at Keithsburg
Mississippi River at Quincy Lock and Dam 21
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