St. Joseph River (MI/IN) at Mottville, MI

River level and flood forecast · St. Joseph County

Normal2.8 ftas of Tue 1:15 AM

The river is 5.2 ft below flood stage (8 ft).

Flow: 1,040 cubic feet per second (USGS).

The last 7 days and the forecast

246810WedThuFriSatSunMonTueAction 7 ftFlood 8 ftModerate 9 ftMajor 10 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.

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Flood stages

Major flood stage10 ft
Moderate flood stage9 ft
Flood stage8 ft
Action stage7 ft
Record crest (April 27, 1950)10.76 ft

What floods at each level

From the National Weather Service, highest first.

  • 10 ftA major flood is in progress. Expect extensive inundation and damage. Many primary roads and bridges will be closed and many people evacuated.
  • 9 ftModerate flooding of businesses and residences will occur in the village of Constantine.
  • 8 ftMinor flooding of farmland and secondary roads will occur in low lying areas adjacent to the river.
  • 6 ftMinor flooding of lowland adjacent to the river can be expected.

Highest crests on record

  1. 10.76 ft — April 27, 1950
  2. 10.41 ft — June 4, 1989
  3. 10.17 ft — February 24, 2018
  4. 9.81 ft — March 21, 1982
  5. 9.57 ft — February 28, 1985

Recent crests: 6.67 ft (April 5, 2023) · 6.44 ft (February 22, 2022) · 6.11 ft (June 30, 2021) · 8.62 ft (May 20, 2020) · 6.86 ft (May 10, 2019)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MOTM4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.