St. Marys River at Decatur, IN

The last 7 days and the forecast

NWS forecast issued Sun, Sep 27, 9:49 AM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

What floods at each level

From the National Weather Service, highest first.

• 30.6 ftFlood water begins to hit the bottom of the bridge at the gage site.
• 27.5 ftFlood water reaches the 100 year flood level.
• 26.5 ftRecord flooding is in progress. Evacuations are necessary in Decatur, Indiana and Wilshire, Ohio. Serious flooding of the Central Soya Plant can be expected along with widespread flooding and disruption of land transportation.
• 24.5 ftMajor flooding is in progress with water at the top of the levee protecting the Central Soya Plant. US Highway 33 near Willshire, Ohio begins to flood. Extensive flooding of the east side of Decatur along with Bellmont High School occurs. Evacuations become necessary.
• 23.5 ftMany east side city streets and county roads are flooded. Evacuation of east side residents near Bellmont High School becomes necessary.
• 23 ftPortions of Ohio Routes 33, 49 and 81 are closed near Willshire.
• 22.5 ftPiqua Road begins to flood at Decatur. Evacuations begin on Ogg Street. Ohio State Route 49 near Willshire becomes flooded.
• 21.5 ftHigh water affects Piqua Rd...Ohio State Route 49 near the state line along with east side Decatur streets. Residential flooding begins on East Jackson and Ogg Streets. Bellmont High School grounds begin flooding.
• 20.5 ftIndiana 101 north of Pleasant Mills is closed by flood water. Extensive agricultural flooding is in progress. Residents of the east and southeast side of Decatur become concerned.
• 19.5 ftFlooding expands into more farm land in the Decatur area. Flood waters approach Piqua Road...Ohio State Route 49 and Indiana 101 just north of Pleasant Mills. Flood water begins to cross Ohio highway 49 north of Willshire, Ohio.
• 18.8 ftFlood water begins to cross Ohio Highway 49 north of Willshire, Ohio.
• 18.5 ftCounty Road 225 North...just north of Pleasant Mills Indiana is closed by flood water. Low land areas of Kekionga Park on the southeast side of Decatur begin flooding. Flooding is limited to farm land in Pleasant Mills Indiana and Willshire Ohio.
• 17.5 ftCounty road 225 north of Pleasant Mills is flooded. Agricultural land flooding increases in northern...central and eastern Adams County.
• 17 ftAgricultural flooding occurs along the river in northern...central and eastern Adams County.

Highest crests on record

1. 26.92 ft — July 9, 2003
2. 25.11 ft — June 18, 2015
3. 24.4 ft — March 14, 1982
4. 24.31 ft — February 25, 1985
5. 24.22 ft — February 10, 1959

Recent crests: 18.85 ft (May 11, 2021) · 18.92 ft (January 12, 2020) · 21.58 ft (April 28, 2019) · 18.17 ft (February 25, 2018) · 21.68 ft (May 26, 2017)

Up and down the river, and nearby

• UpstreamSt. Marys River at Pleasant Mills, IN
• DownstreamSt. Marys River near Fort Wayne, IN
• St. Marys River at Willshire, OH
• Wabash River at Bluffton, IN
• Wabash River at Linn Grove, IN
• Maumee River at New Haven, IN
• Maumee River at Coliseum Blvd In Fort Wayne, IN
• St. Marys River at Rockford, OH