Station Name: Alton 2SE - Melvin Price L&D
Data Source: USGS

Elevation Above Sea Level: 407 feet

Nearest Address:
Lock and Dam Way
Alton, IL 62002
Madison County

GPS Coordinates: 38.8664, -90.1464

Nearby Water Temperatures

Flood Warning issued April 22 at 11:02AM CDT until April 30 at 7:00AM CDT by NWS St Louis MO

Effective: Wed April 22, 2026, 11:02 AM
Expires: Thu April 23, 2026, 11:15 PM

...The Flood Warning continues for the Mississippi River at the following locations... Mississippi River at Chester. Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Canton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Grafton. * WHEN...Until Thursday, April 30. * IMPACTS...At 21.0 feet, Water begins flooding the floor at the Palisades Marina in Portage Des Sioux. Access to homes along North Shore Drive in eastern St. Charles County becomes cut off near this height. * ADDITIONAL DETAILS... - At 10:30 AM CDT Wednesday the stage was 20.8 feet. - Forecast...The river is expected to rise to a crest of 20.8 feet this afternoon. It will then fall below flood stage Wednesday, April 29. - Flood stage is 20.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Flood Warning issued April 22 at 9:55AM CDT by NWS St Louis MO

Effective: Wed April 22, 2026, 9:55 AM
Expires: Thu April 23, 2026, 10:00 PM

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Hardin. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Hardin. * WHEN...Until further notice. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins. * ADDITIONAL DETAILS... - At 9:30 AM CDT Wednesday the stage was 26.4 feet. - Forecast...The river is expected to rise to a crest of 26.5 feet tomorrow morning. - Flood stage is 25.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Flood Warning issued April 22 at 11:02AM CDT by NWS St Louis MO

Effective: Wed April 22, 2026, 11:02 AM
Expires: Thu April 23, 2026, 11:15 PM

...The Flood Warning continues for the Mississippi River at the following locations... Mississippi River at Chester. Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Canton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...Until further notice. * IMPACTS...At 28.3 feet, Near this height, Lakeview Drive becomes impassable and Kampville Road begins flooding in northern St. Charles County. * ADDITIONAL DETAILS... - At 10:30 AM CDT Wednesday the stage was 28.4 feet. - Forecast...The river is expected to rise to a crest of 28.4 feet this afternoon. - Flood stage is 26.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Flood Warning issued April 22 at 11:02AM CDT by NWS St Louis MO

Effective: Wed April 22, 2026, 11:02 AM
Expires: Thu April 23, 2026, 11:15 PM

...The Flood Warning continues for the Mississippi River at the following locations... Mississippi River at Chester. Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Canton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Clarksville. * WHEN...Until further notice. * IMPACTS...At 29.0 feet, Water enters the parking lot entrance at the Clarksville Riverfront Park. * ADDITIONAL DETAILS... - At 10:30 AM CDT Wednesday the stage was 28.4 feet. - Forecast...The river is expected to fall to 26.5 feet Wednesday, April 29. - Flood stage is 25.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx