Little Calumet River at Munster

1. 20.00 ftWater reaches the top of the levees near the river in Munster and Hammond.
2. 19.50 ftWithout flood protection, widespread inundation of roadways and structures in the floodplain reaches up to 5 blocks from the river in Hammond and Munster.
3. 19.00 ftWater reaches isolated low spots in the levee in western sections of Hammond and Munster.
4. 18.50 ftEvacuations may begin near the river in Hammond and Munster. Without flood protection, I-80 is threatened at Calumet Avenue in Hammond.
5. 17.50 ftResidences threatened north of the river between Hohman Avenue and Lyman Avenue in Hammond. Water reaches the top of the levee in Calumet City and Lansing. Calumet Avenue may be closed at the levee in Hammond and Munster to install temporary flood protection. Hohman Avenue is threatened north of the river in Hammond.
6. 16.50 ftWithout flood protection, widespread inundation of roadways and structures reaches up to 5 blocks from the river in Calumet City and Lansing.
7. 15.50 ftColumbia Avenue may be closed at the levee in Hammond and Munster to install temporary flood protection.
8. 12.50 ftMost areas outside of the levee-protected area are inundated in Hammond and Munster.
9. 10.00 ftWater overflows low-lying river banks outside of the levee-protected area in Hammond and Munster.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• June 26, 2021: 13.20 ft
• May 23, 2020: 14.13 ft
• May 18, 2020: 13.94 ft
• April 30, 2020: 12.85 ft
• January 12, 2020: 12.80 ft
• September 29, 2019: 14.52 ft
• June 28, 2019: 13.14 ft
• May 2, 2019: 14.24 ft
• May 1, 2019: 14.24 ft
• July 5, 2018: 12.54 ft

• UpstreamLittle Calumet River at Munster (Northcote Avenue)
• DownstreamLittle Calumet River at South Holland
• Hart Ditch at Munster
• Little Calumet River at Hammond (Indianapolis Boulevard)
• Grand Calumet River at Hammond (Columbia Ave)
• Little Calumet River at Highland (Kennedy Avenue)
• Lansing Ditch at Lansing
• Thorn Creek at Thornton

Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.