River gauges›South Dakota

RIVER GAUGE · MISSOURI RIVER

Missouri River at Big Bend Dam

Lyman County, South Dakota

Water level1420.90 ft

Flow—

Last readingSep 16, 2026, 4:00 PM UTC (last recorded)

Action1422 ft

Minor flood1422.5 ft

Moderate flood1423 ft

Major flood1440 ft

The past week

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What floods at each level

1422 ft
Base of the exclusive flood control zone

Highest crests on record

Date	Level	Flow
Jun 3, 1991	1422.1 ft	45,500 cfs
Apr 21, 1971	1421.9 ft	61,600 cfs
Jun 21, 2011	1421.8 ft	166,300 cfs

More on Missouri River

UpstreamMissouri River at Farm Island

DownstreamMissouri River at Chamberlain

Missouri River at Chamberlain Missouri River at Fort Randall Dam Missouri River at Farm Island Missouri River near Greenwood Missouri River at La Framboise Island Missouri River at Oahe Dam Missouri River at Pierre Missouri River at Springfield Missouri River at Yankton

Get an alert when Missouri River rises

Save this gauge in the free StormCast app and pick the level that matters to you. Your phone goes off when the water gets there.

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A river gauge in the StormCast app

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