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 28 at 10:24AM CDT until June 29 at 7:00PM CDT by NWS Chicago IL

Effective: Sun June 28, 2026, 10:24 AM
Expires: Mon June 29, 2026, 4:30 AM

...The Flood Warning is extended for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, Bureau and La Salle Counties. For the Illinois River (Upper)...including La Salle...Minor flooding is occurring. * WHAT...Minor flooding is occurring and forecast 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 tomorrow evening. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 9:45 AM CDT Sunday the stage was 20.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Sunday was 21.1 feet. - Forecast...The river is expected to fall below flood stage tomorrow. - 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 28 at 8:46PM CDT until June 29 at 1:00PM CDT by NWS Chicago IL

Effective: Sun June 28, 2026, 8:46 PM
Expires: Mon June 29, 2026, 11:45 AM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at La Salle affecting Bureau, La Salle and Putnam Counties. * 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 early tomorrow afternoon. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 7:45 PM CDT Sunday the stage was 20.3 feet. - Forecast...The river is expected to fall below flood stage Monday morning and continue falling. - 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 Monday morning.

Heat Advisory issued June 28 at 1:42PM CDT until July 3 at 12:00AM CDT by NWS Lincoln IL

Effective: Sun June 28, 2026, 1:42 PM
Expires: Mon June 29, 2026, 4:30 AM

* WHAT...Heat index values around 105. * WHERE...Portions of central and east central Illinois. * WHEN...From 11 AM Monday to midnight CDT Thursday Night. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.

Flood Warning issued June 28 at 10:31AM CDT until June 29 at 1:00AM CDT by NWS Lincoln IL

Effective: Sun June 28, 2026, 10:31 AM
Expires: Mon June 29, 2026, 1:00 AM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Henry affecting Putnam and Marshall Counties. Illinois River at Peoria affecting Peoria, Woodford and Tazewell Counties. Illinois River at Beardstown affecting Morgan, Brown, Schuyler and Cass Counties. Illinois River near Havana affecting Fulton, Mason and Cass Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Henry. * WHEN...Until just after midnight tonight. * 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 Sunday the stage was 23.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Sunday was 23.5 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 19.2 feet Sunday, July 05. - 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.

Extreme Heat Warning issued June 28 at 6:29PM CDT until July 1 at 10:00PM CDT by NWS Chicago IL

Effective: Sun June 28, 2026, 6:29 PM
Expires: Mon June 29, 2026, 4:30 AM

* WHAT...Dangerously hot conditions with heat index values around 105 expected each afternoon. * WHERE...Central Cook and Northern Cook Counties. * WHEN...From noon Monday to 10 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. The magnitude of anticipated heat, combined with oppressive warmth at night will lead to hazardous conditions, particularly for the elderly and those with pre-existing health conditions. Residents of the city of Chicago can call 3 1 1 to request well being checks for elderly friends or family members, or for information on finding the nearest cooling center.