NWS: St. Marys River Flood Warning issued until Wednesday next – 9/23/2026

Updated Flood Statement from the National Weather Service Northern Indiana regarding the St. Marys River in Fort Wayne and Allen County Indiana.

Flood Statement
National Weather Service Northern Indiana
922 PM EDT Fri Sep 18 2026

...The Flood Warning is extended for the following rivers in
Indiana...

  Wabash River near Bluffton IN affecting Wells County.

  Saint Marys River at St. Mary`s River near Fort Wayne affecting
  Allen IN County.

...The Flood Warning continues for the following rivers in Indiana...
Ohio...

  Saint Marys River near Decatur affecting Van Wert, Allen IN and
  Adams Counties.

  Wabash River near Linn Grove affecting Wells and Adams Counties.

For the Wabash River...including Linn Grove, Bluffton IN...Moderate
flooding is forecast.
For the Saint Marys River...including Decatur, St. Mary`s River near
Fort Wayne...Moderate flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

Detailed river forecasts and additional information can be found at
www.weather.gov/iwx under Rivers and Lakes.

This statement will be updated within the next 12 to 24 hours.

&&

INC001-003-OHC161-191930-
/O.EXT.KIWX.FL.W.0057.000000T0000Z-260924T1942Z/
/DCRI3.2.ER.000000T0000Z.260919T1200Z.260923T1942Z.NO/
922 PM EDT Fri Sep 18 2026

...FLOOD WARNING NOW IN EFFECT UNTIL THURSDAY AFTERNOON...

* WHAT...Moderate flooding is occurring and moderate flooding is
  forecast.

* WHERE...Saint Marys River near Decatur.

* WHEN...Until Thursday afternoon.

* IMPACTS...At 23.5 feet, Many east side city streets and county
  roads are flooded. Evacuation of east side residents near Bellmont
  High School becomes necessary.

* ADDITIONAL DETAILS...
  - At 8:55 PM EDT Friday the stage was 23.4 feet.
  - Recent Activity...The maximum river stage in the 24 hours ending
    at 8:55 PM EDT Friday was 23.4 feet.
  - Forecast...The river will rise to 23.9 feet tomorrow morning. It
    will then fall Sunday morning. It will rise to 20.7 feet early
    Monday afternoon. It will then fall below flood stage Wednesday
    afternoon.
  - Flood stage is 17.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4093 8506 4094 8504 4084 8491 4082 8494


$$

The downtownstream St. Marys River Flooding Warning for Decatur, Indiana, and Van Wert County Ohio:

Flood Statement
National Weather Service Northern Indiana
922 PM EDT Fri Sep 18 2026

…The Flood Warning is extended for the following rivers in
Indiana…

Wabash River near Bluffton IN affecting Wells County.

Saint Marys River at St. Mary`s River near Fort Wayne affecting
Allen IN County.

…The Flood Warning continues for the following rivers in Indiana…
Ohio…

Saint Marys River near Decatur affecting Van Wert, Allen IN and
Adams Counties.

Wabash River near Linn Grove affecting Wells and Adams Counties.

For the Wabash River…including Linn Grove, Bluffton IN…Moderate
flooding is forecast.
For the Saint Marys River…including Decatur, St. Mary`s River near
Fort Wayne…Moderate flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive cars
through flooded areas.

Detailed river forecasts and additional information can be found at
www.weather.gov/iwx under Rivers and Lakes.

This statement will be updated within the next 12 to 24 hours.

&&

INC003-191930-
/O.EXT.KIWX.FL.W.0058.000000T0000Z-260924T0000Z/
/SASI3.1.ER.260919T0139Z.260920T0000Z.260923T0000Z.NO/
922 PM EDT Fri Sep 18 2026

…FLOOD WARNING NOW IN EFFECT UNTIL WEDNESDAY EVENING…

* WHAT…Minor flooding is forecast.

* WHERE…Saint Marys River at St. Mary`s River near Fort Wayne.

* WHEN…Until Wednesday evening.

* IMPACTS…At 17.0 feet, Some residents in the Winchester Road area
may need to be evacuated. Property damage begins in some areas at
this level.

* ADDITIONAL DETAILS…
– At 9:00 PM EDT Friday the stage was 13.9 feet.
– Forecast…The river is expected to rise above flood stage late
this evening to a crest of 16.9 feet tomorrow evening. It will
then fall below flood stage Tuesday evening.
– Flood stage is 14.0 feet.
– http://www.weather.gov/safety/flood

&&

LAT…LON 4104 8518 4109 8516 4109 8512 4104 8514
4094 8504 4093 8506

$$

 

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