Station Name: ROCK RIVER AT BYRON, IL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 679 feet

Nearest Address:
State Rte 72
Byron, IL 61010
Ogle County

GPS Coordinates: 42.12218889, -89.2553639

Nearby Water Temperatures

Frost Advisory issued May 6 at 1:23PM CDT until May 7 at 8:00AM CDT by NWS Chicago IL

Effective: Wed May 6, 2026, 1:23 PM
Expires: Wed May 6, 2026, 11:30 PM

* WHAT...Temperatures in the low to mid 30s and areas of frost. * WHERE...Portions of north central and northeast Illinois. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.

Flood Warning issued May 6 at 10:19AM CDT until May 7 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 10:19 AM
Expires: Wed May 6, 2026, 10:30 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Afton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until tomorrow morning. * IMPACTS...At 9.0 feet, Floodwaters affect property of a home on South Christian Road on the east side of the river in the Afton area. There is minor erosional flood damage to lowland and agricultural land in the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 10:00 AM CDT Wednesday the stage was 9.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Wednesday was 9.3 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 7.8 feet Wednesday, May 13. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.2 feet on 05/04/1951. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1030 PM CDT.

Flood Warning issued May 6 at 4:03PM CDT until May 7 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed May 6, 2026, 4:03 PM
Expires: Thu May 7, 2026, 4:15 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Afton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...Until tomorrow morning. * IMPACTS...At 9.0 feet, Floodwaters affect property of a home on South Christian Road on the east side of the river in the Afton area. There is minor erosional flood damage to lowland and agricultural land in the Afton and Janesville areas. * ADDITIONAL DETAILS... - At 3:00 PM CDT Wednesday the stage was 9.2 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Wednesday was 9.3 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 7.8 feet Wednesday, May 13. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 9.2 feet on 05/04/1951. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued late tonight at 415 AM CDT.

Frost Advisory issued May 6 at 1:17PM CDT until May 7 at 8:00AM CDT by NWS Quad Cities IA IL

Effective: Wed May 6, 2026, 1:17 PM
Expires: Wed May 6, 2026, 9:30 PM

* WHAT...Temperatures in the lower to middle 30s will result in frost formation. * WHERE...Portions of north central and northwest Illinois and east central and northeast Iowa. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.

Frost Advisory issued May 6 at 7:27PM CDT until May 7 at 8:00AM CDT by NWS Quad Cities IA IL

Effective: Wed May 6, 2026, 7:27 PM
Expires: Thu May 7, 2026, 3:30 AM

* WHAT...Temperatures in the lower to middle 30s will result in frost formation. * WHERE...Portions of north central and northwest Illinois and east central and northeast Iowa. * WHEN...From 1 AM to 8 AM CDT Thursday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.