Station Name: Seneca
Data Source: USGS

Elevation Above Sea Level: 499 feet

Nearest Address:
Harbor Lane
Seneca, IL 61360
La Salle County

GPS Coordinates: 41.2997, -88.6142

Nearby Water Temperatures

Flood Warning issued June 22 at 9:59AM CDT by NWS Chicago IL

Effective: Mon June 22, 2026, 9:59 AM
Expires: Tue June 23, 2026, 4:00 AM

...The Flood Warning is extended for the following rivers in Illinois... Illinois River at La Salle affecting La Salle, Bureau and Putnam Counties. * WHAT...Minor flooding is occurring and forecasted to continue. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Until further notice. * IMPACTS...At 22.0 feet, Lower parking lot at Starved Rock State Park is inundated east of La Salle. High water levels begin to impact shipping interests along the river. * ADDITIONAL DETAILS... - At 9:45 AM CDT Monday the stage was 21.9 feet. - Forecast...The river is expected to rise to a crest of 23.8 feet tomorrow or Wednesday. It is then expected to gradually fall though the week. - Flood stage is 20.0 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 late tonight.

Flood Warning issued June 22 at 9:29PM CDT by NWS Chicago IL

Effective: Mon June 22, 2026, 9:29 PM
Expires: Tue June 23, 2026, 3:30 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at La Salle affecting La Salle, Putnam and Bureau Counties. For the Illinois River (Upper)...including La Salle...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Until further notice. * IMPACTS...At 22.0 feet, Lower parking lot at Starved Rock State Park is inundated east of La Salle. High water levels begin to impact shipping interests along the river. * ADDITIONAL DETAILS... - At 8:45 PM CDT Monday the stage was 22.9 feet. - Forecast...The river is expected to rise to a crest of 23.4 feet early Tuesday afternoon. It will gradually fall through this weekend, and possibly fall below flood stage by early next week. - Flood stage is 20.0 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.

Flood Warning issued June 22 at 10:13AM CDT until June 29 at 1:00AM CDT by NWS Lincoln IL

Effective: Mon June 22, 2026, 10:13 AM
Expires: Tue June 23, 2026, 2:15 AM

...Forecast flooding changed from Minor to Moderate severity and increased in duration for the following rivers in Illinois... Illinois River at Henry affecting Marshall and Putnam Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Illinois River at Henry. * WHEN...Until Monday, June 29. * IMPACTS...At 23.0 feet, Water begins to affect the marina in Henry along with minor flooding of land adjacent to the river. * ADDITIONAL DETAILS... - At 9:45 AM CDT Monday the stage was 23.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Monday was 23.1 feet. - Forecast...The river is expected to rise to a crest of 24.1 feet early Thursday morning. It will then fall below flood stage Sunday evening. - Flood stage is 23.0 feet. - http://www.weather.gov/safety/flood

Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Additional information is available at www.weather.gov.

Flood Warning issued June 22 at 9:24PM CDT until June 28 at 1:00PM CDT by NWS Lincoln IL

Effective: Mon June 22, 2026, 9:24 PM
Expires: Tue June 23, 2026, 1:30 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Henry affecting Putnam and Marshall Counties. Illinois River at Peoria affecting Tazewell, Peoria and Woodford Counties. Illinois River at Beardstown affecting Cass, Morgan, Brown and Schuyler Counties. Illinois River near Havana affecting Fulton, Cass and Mason Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Illinois River at Henry. * WHEN...Until early Sunday afternoon. * IMPACTS...At 23.0 feet, Water begins to affect the marina in Henry along with minor flooding of land adjacent to the river. * ADDITIONAL DETAILS... - At 8:45 PM CDT Monday the stage was 23.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Monday was 23.4 feet. - Forecast...The river is expected to rise to a crest of 24.0 feet Wednesday evening. It will then fall below flood stage Sunday morning. - Flood stage is 23.0 feet. - http://www.weather.gov/safety/flood

Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Additional information is available at www.weather.gov.

Beach Hazards Statement issued June 22 at 9:21PM CDT until June 23 at 4:00AM CDT by NWS Chicago IL

Effective: Mon June 22, 2026, 9:21 PM
Expires: Tue June 23, 2026, 4:00 AM

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 3 to 6 feet expected. * WHERE...In Illinois, Central Cook County. In Indiana, Lake and Porter Counties. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.