Station Name: GRAND CALUMET RIVER AT COLUMBIA AV AT HAMMOND, IN
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 597 feet

Nearest Address:
5225 Columbia Ave
Hammond, IN 46320
Lake County

GPS Coordinates: 41.6186111, -87.4998333

Nearby Water Temperatures

Flood Warning issued July 27 at 7:59PM CDT until July 28 at 10:00AM CDT by NWS Chicago IL

Effective: Mon July 27, 2026, 7:59 PM
Expires: Tue July 28, 2026, 10:00 AM

...The Flood Warning continues for the following rivers in Illinois...Indiana... Little Calumet River at Munster (Hohman Avenue) affecting Cook and Lake IN Counties. For the Little Calumet River...including Munster (Hohman Avenue)... Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Little Calumet River from IN-912 in Hammond downstream to confluence with Thorn Creek in South Holland, including the Munster (Hohman Avenue) gauge. * WHEN...Until late Tuesday morning. * IMPACTS...At 12.5 feet, Most areas outside of the levee-protected area are inundated in Hammond and Munster. * ADDITIONAL DETAILS... - At 7:00 PM CDT Monday the stage was 10.8 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 12.3 feet just after midnight tonight. It will then fall below flood stage Tuesday morning. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Tuesday morning.

Flood Warning issued July 27 at 7:56PM CDT until July 28 at 2:51PM CDT by NWS Chicago IL

Effective: Mon July 27, 2026, 7:56 PM
Expires: Tue July 28, 2026, 2:00 PM

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Thorn Creek...including Thornton...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until early Tuesday afternoon. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 8.2 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 9.6 feet just after midnight tonight. It will then fall below flood stage Tuesday morning. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Tuesday afternoon.

Beach Hazards Statement issued July 27 at 10:23PM EDT until July 29 at 8:00AM EDT by NWS Northern Indiana

Effective: Mon July 27, 2026, 9:23 PM
Expires: Tue July 28, 2026, 5:30 AM

* WHAT...Life-threatening waves and currents expected. - High wave action: Waves building to 3 to 5 feet tonight and to 5 to 8 feet Tuesday afternoon and evening. - Life threatening rip, longshore, and structural currents are expected. Structural currents may be especially strong on the north sides of piers or breakwalls Tuesday afternoon and evening. * WHERE...In Indiana, Northern La Porte county. In Michigan, Northern Berrien and Southern Berrien counties. * WHEN...Through Wednesday morning. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.

Remain out of the water to avoid hazardous swimming conditions. Do not venture out on piers.

Beach Hazards Statement issued July 28 at 4:04AM EDT until July 29 at 8:00AM EDT by NWS Northern Indiana

Effective: Tue July 28, 2026, 3:04 AM
Expires: Tue July 28, 2026, 11:15 AM

* WHAT...Life-threatening waves and currents expected. - High wave action: Waves building to 3 to 5 feet this morning building to 5 to 8 feet Tuesday afternoon and evening. - Life threatening rip, longshore, and structural currents are expected. Structural currents may be especially strong on the north sides of piers or breakwalls Tuesday afternoon and evening. * WHERE...In Indiana, Northern La Porte county. In Michigan, Northern Berrien and Southern Berrien counties. * WHEN...Through Wednesday morning. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.

Remain out of the water to avoid hazardous swimming conditions. Do not venture out on piers.