National Weather Service Advanced Hydrologic Prediction Service

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This probabilistic forecast is issued by the Ohio River Forecast Center.

About this graph

Forecasts for the St. Marys River near Fort Wayne are issued as needed during times of high water, but are not routinely available.

Return to Area Map

Upstream Gauge

Zoom Level:16

Flood Categories (in feet)

Major Flood Stage:	19
Moderate Flood Stage:	17
Flood Stage:	14
Action Stage:	12
Low Stage (in feet):	-9999

Historic Crests
(1) 21.20 ft on 07/09/2003
(2) 19.88 ft on 06/19/2015
(3) 19.66 ft on 03/14/1982
(4) 19.06 ft on 01/14/2005
(5) 18.33 ft on 02/26/1985
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.91 ft on 07/17/2021
(2) 13.21 ft on 01/12/2020
(3) 15.27 ft on 04/29/2019
(4) 15.27 ft on 04/29/2019
(5) 12.73 ft on 02/21/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.77 ft on 10/04/2008
(2) 0.78 ft on 06/29/2012
(3) 0.80 ft on 10/29/1999
Show More Low Water Records

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
22	Structural damage is done to homes and businesses on the south side of Fort Wayne near the Saint Mary's River. Record flood was set on July 9, 2003 when the river reached 21.2 feet.
20	A major flood is in progress and water is nearing the top of many levees.
19	Flooding reaching major category with isolated evacuations becoming necessary. Some roads and bridges are closed at this level.
18	An increasing number of city streets flood, and evacuations may become necessary. Property damage begins in more areas at this level.
17	Some residents in the Winchester Road area may need to be evacuated. Property damage begins in some areas at this level.
15	Flooding occurs on the lowest unprotected city streets, park drives and county roads.
14	Flooding occurs in parks and low farmland throughout southern Allen County. The City of Fort Wayne starts 24 hour flood fighting procedures.
Photos (1) Upstream view from gauge site (2) Downstream view from gauge site

Other Real-time and/or Archive Data Sources:

U.S. Geological Survey (USGS) Data and Site Info for Fort Wayne

Additional Information

Gauge zero transitioned from 748.97 NGVD29 to 748.41 NAVD88 on July 25, 2012. Potential River Levels - Used to

Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS)	10 Day (NAEFS)	River Forecast VS. River Potential

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

To use the USGS flood inundation mapper tool, please visit the following web address: http://wim.usgs.gov/FIMI/FloodInundationMapper.html

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Northern Indiana Weather Forecast Office
7506 E 850 N
Syracuse, IN 46567
(574) 834-1104
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Page last modified: 2-Nov-2020 7:30 PM

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