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

Hydrologic Outlook issued April 14 at 12:33PM CDT by NWS Chicago IL

Effective: Tue April 14, 2026, 12:33 PM
Expires: Wed April 15, 2026, 12:00 PM

ESFLOT Waves of showers and thunderstorms are expected this evening through the end of the week. Urban and river flooding will be possible. Atmospheric conditions are favorable for some thunderstorms to have rainfall rates in excess of 1 to 2 inches per hour tonight and tomorrow. In addition, some rivers and streams remain elevated from recent rainfall and soil moisture is elevated across most of northern Illinois and northwestern Indiana. In urban and poor drainage areas isolated flooding of roadways, creeks, and streams may occur with areas of heaviest rainfall. Widespread rainfall may also lead to river rises and possible flooding, in particular along already elevated rivers such as the Fox, Des Plaines, and Kankakee. Additional chances for rainfall are expected to continue through the remainder of the week. This outlook means that elevated water levels and potential impacts are possible, but not yet certain. Persons should closely monitor forecasts including the possibility of flood watches, warnings, and advisories. This product will be updated by tomorrow morning.

Flood Watch issued April 14 at 7:11PM CDT until April 15 at 6:00AM CDT by NWS Chicago IL

Effective: Tue April 14, 2026, 7:11 PM
Expires: Wed April 15, 2026, 6:00 AM

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Kane, Kendall, Lake IL, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following area, Lake IN. * WHEN...Until 6 AM CDT Wednesday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - An area of thunderstorms with rain rates up to one to two inches per hour is expected to move through the area this evening through the overnight hours. Elevated soil moisture due to recent rainfall is expected to increase the susceptibility to flash flooding. - http://www.weather.gov/safety/flood

A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop.

Tornado Watch issued April 14 at 2:33PM CDT until April 14 at 10:00PM CDT by NWS Chicago IL

Effective: Tue April 14, 2026, 2:33 PM
Expires: Tue April 14, 2026, 10:00 PM

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 109 IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 8 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE DE KALB LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS KANE LAKE IL MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BUFFALO GROVE, BYRON, CRYSTAL LAKE, DEKALB, DIXON, ELGIN, GURNEE, MCHENRY, MUNDELEIN, OREGON, ROCHELLE, ROCKFORD, SYCAMORE, WAUKEGAN, AND WOODSTOCK.

Flood Warning issued April 14 at 10:40AM CDT by NWS Chicago IL

Effective: Tue April 14, 2026, 10:40 AM
Expires: Wed April 15, 2026, 4:45 AM

...The Flood Warning is extended 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...Minor flooding is forecast. * WHAT...Minor 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 10.5 feet, Structures threatened along Fox River Drive in East Dundee. Parking lots threatened in downtown West Dundee. Low-lying sections of Cornish Park are inundated in Algonquin. Low-lying sections of Trout Park inundated north of Elgin. * ADDITIONAL DETAILS... - At 9:30 AM CDT Tuesday the stage was 9.5 feet. - Forecast...Due to forecasted rainfall tonight, the river is now expected remain above flood stage for the next several days. - Flood stage is 9.5 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.