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 26 at 11:09AM CDT until May 1 at 1:00PM CDT by NWS St Louis MO

Effective: Sun April 26, 2026, 11:09 AM
Expires: Mon April 27, 2026, 11:15 PM

...The Flood Warning is extended for the following river in Missouri and Illinois... Mississippi River at Grafton. Mississippi River at Canton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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 Friday afternoon. * ADDITIONAL DETAILS... - At 10:30 AM CDT Sunday the stage was 20.4 feet. - Forecast...The river is expected to rise to a crest of 20.4 feet this afternoon. - Flood stage is 20.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Flood Warning issued April 26 at 10:19AM CDT by NWS St Louis MO

Effective: Sun April 26, 2026, 10:19 AM
Expires: Mon April 27, 2026, 10:30 PM

...The Flood Warning is extended for the following river 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. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 26.2 feet. - Forecast...The river is expected to fall slowly to near 26.0 feet Tuesday 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 26 at 9:52PM CDT by NWS St Louis MO

Effective: Sun April 26, 2026, 9:52 PM
Expires: Tue April 28, 2026, 10:00 AM

...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Canton. Mississippi River at Saverton. Mississippi River at Hannibal. ...The Flood Warning continues for the following rivers in Illinois...Missouri... Illinois River at Hardin. Mississippi River at Winfield. Mississippi River at Clarksville. Mississippi River at Louisiana. 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 PM CDT Sunday the stage was 26.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Sunday was 26.3 feet. - Forecast...The river is expected to rise to a crest of 26.7 feet early Friday morning. - Flood stage is 25.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Flood Warning issued April 26 at 9:52PM CDT until May 4 at 7:00PM CDT by NWS St Louis MO

Effective: Sun April 26, 2026, 9:52 PM
Expires: Tue April 28, 2026, 10:00 AM

...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Canton. Mississippi River at Saverton. Mississippi River at Hannibal. ...The Flood Warning continues for the following rivers in Illinois...Missouri... Illinois River at Hardin. Mississippi River at Winfield. Mississippi River at Clarksville. Mississippi River at Louisiana. 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 Monday, May 04. * 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 9:30 PM CDT Sunday the stage was 20.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Sunday was 20.5 feet. - Forecast...The river is expected to rise to a crest of 20.8 feet Thursday evening. It will then fall below flood stage Sunday, May 03. - Flood stage is 20.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Flood Warning issued April 26 at 11:09AM CDT by NWS St Louis MO

Effective: Sun April 26, 2026, 11:09 AM
Expires: Mon April 27, 2026, 11:15 PM

...The Flood Warning is extended for the following river in Missouri and Illinois... Mississippi River at Grafton. Mississippi River at Canton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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. * ADDITIONAL DETAILS... - At 10:30 AM CDT Sunday the stage was 28.2 feet. - Forecast...The river is expected to fall to 28.0 feet Tuesday morning. - Flood stage is 26.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx