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

Freeze Warning issued April 19 at 8:44AM CDT until April 20 at 9:00AM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 8:44 AM
Expires: Sun April 19, 2026, 7:00 PM

* WHAT...Sub-freezing temperatures as low as 27 expected, with the coldest conditions across interior northern Illinois. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM EDT/ Monday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.

Freeze Warning issued April 19 at 2:40PM CDT until April 20 at 9:00AM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 2:40 PM
Expires: Mon April 20, 2026, 1:00 AM

* WHAT...Sub-freezing temperatures as low as 27 expected, with the coldest conditions across interior northern Illinois. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM EDT/ Monday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.

Flood Warning issued April 19 at 12:01PM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 12:01 PM
Expires: Mon April 20, 2026, 6:15 AM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at La Salle affecting La Salle, Putnam and Bureau 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 11:45 AM CDT Sunday, the stage was 21.5 feet. - Forecast...The river is expected remain nearly steady into Monday before gradually falling over the next several days. - 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by Monday morning.

Flood Warning issued April 19 at 11:55AM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 11:55 AM
Expires: Mon April 20, 2026, 6:00 AM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kendall and Kane Counties. Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. * WHAT...Minor flooding is occurring and forecasted to continue. * WHERE...Fox River from Red Gate Road in St. Charles downstream to Millington, including the Montgomery gauge. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, low-lying parking lots at city hall and Boy Scout Island are threatened in St. Charles. Fox River Trail is threatened at St. Mary Park in St. Charles. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday, the stage was 13.6 feet. - Forecast...The river is expected to remain steady at or just above flood stage at around 13.5 to 13.6 feet. - Flood stage is 13.5 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by Monday morning.

Freeze Warning issued April 19 at 11:00AM CDT until April 20 at 9:00AM CDT by NWS Quad Cities IA IL

Effective: Sun April 19, 2026, 11:00 AM
Expires: Sun April 19, 2026, 7:00 PM

* WHAT...Sub-freezing temperatures in the mid to upper 20s. * WHERE...Portions of north central, northwest, and west central Illinois and east central, northeast, and southeast Iowa. * WHEN...From midnight tonight to 9 AM CDT Monday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.