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 Watch issued April 15 at 10:54AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:54 AM
Expires: Thu April 16, 2026, 5:00 AM

...The Flood Watch continues for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, La Salle and Bureau zones. For the Illinois River (Upper)...including La Salle...flooding is possible. * WHAT...Flooding is possible. * 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 Wednesday the stage was 18.6 feet. - Forecast...Flood stage may be reached early Friday morning. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. 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 Watch issued April 15 at 10:43AM CDT until April 18 at 1:00PM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:43 AM
Expires: Thu April 16, 2026, 4:45 AM

...The National Weather Service in Chicago IL has issued a Flood Watch for the following rivers in Illinois... Fox River at Dayton affecting La Salle zone. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery, Dayton...flooding is possible. * WHAT...Flooding is possible. * WHERE...Fox River from Millington downstream to confluence with the Illinois River, including the Dayton gauge. * WHEN...From Thursday evening to early Saturday afternoon. * IMPACTS...At 12.5 feet, 2062nd Road threatened in Wedron. Low-lying agricultural land inundated near Wedron. * ADDITIONAL DETAILS... - At 9:45 AM CDT Wednesday the stage was 9.2 feet. - Forecast...Flood stage may be reached late tomorrow evening. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. 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 Watch issued April 15 at 9:32PM CDT until April 20 at 7:00AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 9:32 PM
Expires: Thu April 16, 2026, 3:45 PM

...The Flood Watch continues for the following rivers in Illinois... Illinois River at La Salle affecting Putnam, Bureau and La Salle zones. For the Illinois River (Upper)...including La Salle...flooding is possible. * WHAT...Flooding is possible. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Until Monday morning. * IMPACTS...At 20.0 feet, Agricultural areas in La Salle, Spring Valley, and Peru are inundated. * ADDITIONAL DETAILS... - At 8:45 PM CDT Wednesday the stage was 18.8 feet. - Forecast...Flood stage may be reached based on the latest forecast information. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. 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 Thursday afternoon.

Flood Warning issued April 15 at 10:43AM CDT until April 18 at 7:00AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:43 AM
Expires: Thu April 16, 2026, 4:45 AM

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. ...Forecast flooding changed from Minor to Moderate severity for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Kane and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery, Dayton...Moderate flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Fox River from Red Gate Road in St. Charles downstream to Millington, including the Montgomery gauge. * WHEN...From late tonight to Saturday morning. * 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 10:00 AM CDT Wednesday the stage was 13.3 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight to a crest near flood stage tomorrow evening. It will then fall below flood stage early Saturday morning. - 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 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 April 15 at 10:43AM CDT by NWS Chicago IL

Effective: Wed April 15, 2026, 10:43 AM
Expires: Thu April 16, 2026, 4:45 AM

...The National Weather Service in Chicago IL has issued a Flood Warning for the following rivers in Illinois... Fox River at Montgomery affecting Kane and Kendall Counties. ...Forecast flooding changed from Minor to Moderate severity for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Kane and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery, Dayton...Moderate flooding is forecast. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until further notice. * IMPACTS...At 11.5 feet, Residences threatened along Oceola Drive in Algonquin. A few residences threatened along McBridge Street in Elgin. Jayne Street and Beach Drive threatened in Algonquin. River Street threatened in East Dundee. Jerusha Avenue threatened in Elgin. Fox River Trail threatened between East Dundee and Elgin. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Wednesday was 10.0 feet. - Forecast...The river is expected to rise and approach moderate flood stage tomorrow morning. - Flood stage is 9.5 feet. - Flood History...This crest compares to a previous crest of 11.4 feet on 09/17/2019. - 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.