805
WGUS83 KLOT 201636
FLSLOT
FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
1136 AM CDT MON APR 20 2026
...THE FLOOD WARNING IS EXTENDED FOR THE FOLLOWING RIVERS IN
ILLINOIS...
KISHWAUKEE RIVER NEAR PERRYVILLE AFFECTING WINNEBAGO COUNTY.
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN
ILLINOIS...
ROCK RIVER AT BYRON AFFECTING OGLE COUNTY.
ILLINOIS RIVER AT LA SALLE AFFECTING LA SALLE, BUREAU AND PUTNAM
COUNTIES.
PECATONICA RIVER NEAR SHIRLAND AFFECTING WINNEBAGO COUNTY.
ROCK RIVER AT ROCKTON AFFECTING WINNEBAGO COUNTY.
ROCK RIVER AT LATHAM PARK AFFECTING WINNEBAGO COUNTY.
FOX RIVER AT MONTGOMERY AFFECTING KENDALL AND KANE COUNTIES.
DES PLAINES RIVER AT LINCOLNSHIRE AFFECTING COOK AND LAKE IL
COUNTIES.
DES PLAINES RIVER NEAR RUSSELL AFFECTING LAKE IL COUNTY.
DES PLAINES RIVER NEAR GURNEE AFFECTING LAKE IL COUNTY.
...OBSERVED FLOODING CHANGED TO MINOR SEVERITY FOR THE FOLLOWING
RIVERS IN ILLINOIS...
ROCK RIVER AT DIXON AFFECTING LEE AND OGLE COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 THIS EVENING.
ILC201-210900-
/O.EXT.KLOT.FL.W.0027.000000T0000Z-260421T0900Z/
/PRYI2.1.ER.260416T1623Z.260419T1430Z.260421T0000Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING NOW IN EFFECT UNTIL LATE TONIGHT
* WHAT...MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* WHERE...KISHWAUKEE RIVER FROM CONFLUENCE WITH SOUTH BRANCH
KISHWAUKEE RIVER DOWNSTREAM TO THE ROCK RIVER, INCLUDING THE
PERRYVILLE GAUGE.
* WHEN...UNTIL LATE TONIGHT.
* IMPACTS...AT 12.0 FEET, WATER OVERTOPS LOW-LYING BANKS IN
BLACKHAWK SPRINGS FOREST PRESERVE AND IN SOUTH ROCKFORD NEAR
CHICAGO ROCKFORD INTERNATIONAL AIRPORT. TRAILS THREATENED AT
BLACKHAWK SPRINGS FOREST PRESERVE.
* ADDITIONAL DETAILS...
- AT 10:30 AM CDT MONDAY THE STAGE WAS 12.2 FEET.
- RECENT ACTIVITY...THE RIVER STAGE HAS BEEN FALLING SINCE
YESTERDAY.
- FORECAST...THE RIVER IS EXPECTED TO FALL BELOW FLOOD STAGE
THIS EVENING.
- FLOOD STAGE IS 12.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4221 8910 4221 8903 4225 8898 4223 8893
4217 8899 4217 8916
ILC141-211045-
/O.EXT.KLOT.FL.W.0026.000000T0000Z-260423T1800Z/
/BYRI2.2.ER.260417T1800Z.260420T0215Z.260423T0600Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING NOW IN EFFECT UNTIL EARLY THURSDAY AFTERNOON
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...ROCK RIVER FROM CONFLUENCE WITH KISHWAUKEE RIVER TO CASTLE
ROCK STATE PARK NEAR OREGON, INCLUDING THE BYRON GAUGE.
* WHEN...UNTIL EARLY THURSDAY AFTERNOON.
* IMPACTS...AT 15.5 FEET, WATER THREATENS LOWER SECTIONS OF THE
WATER TREATMENT PLANT PROPERTY IN BYRON. WATER THREATENS IL-2 WEST
OF BYRON.
* ADDITIONAL DETAILS...
- AT 10:15 AM CDT MONDAY THE STAGE WAS 14.8 FEET.
- RECENT ACTIVITY...THE RIVER STAGE BEGAN FALLING OVERNIGHT.
- FORECAST...THE RIVER IS EXPECTED TO SLOWLY FALL THE NEXT
SEVERAL DAYS.
- FLOOD STAGE IS 13.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4222 8917 4218 8910 4207 8927 4195 8932
4198 8942 4211 8937
ILC103-141-210000-
/O.CON.KLOT.FL.W.0033.000000T0000Z-260421T0000Z/
/DXRI2.1.ER.260420T1455Z.000000T0000Z.260420T1553Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL THIS EVENING
* WHAT...MINOR FLOODING IS OCCURRING.
* WHERE...ROCK RIVER FROM CASTLE ROCK STATE PARK NEAR OREGON
DOWNSTREAM TO LEE COUNTY LINE, INCLUDING THE DIXON GAUGE.
* WHEN...UNTIL THIS EVENING.
* IMPACTS...AT 16.0 FEET, N CANAL DRIVE THREATENED IN WOODLAND
SHORES. WATER OVERFLOWS LOW-LYING BANKS ALONG WEST FIRST STREET IN
DIXON. RESIDENTIAL PROPERTY THREATENED NEAR SHERMAN AVENUE AND
RIVER STREET IN DIXON.
* ADDITIONAL DETAILS...
- AT 10:15 AM CDT MONDAY THE STAGE WAS 16.0 FEET.
- RECENT ACTIVITY...THE RIVER IS CURRENTLY CRESTING.
- FORECAST...THE RIVER IS EXPECTED TO FALL BELOW FLOOD STAGE
LATER TODAY.
- FLOOD STAGE IS 16.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4183 8963 4192 8948 4198 8942 4195 8932
4183 8943 4175 8963
ILC011-099-155-211045-
/O.CON.KLOT.FL.W.0029.000000T0000Z-000000T0000Z/
/LSLI2.1.ER.260418T0427Z.260419T1130Z.260423T1200Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* 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 10:45 AM CDT MONDAY THE STAGE WAS 21.3 FEET.
- RECENT ACTIVITY...THE RIVER IS CURRENTLY CRESTING AND HAS
BEGUN A SLOW FALL.
- FORECAST...THE RIVER IS EXPECTED TO SLOWLY FALL THE NEXT
SEVERAL DAYS.
- FLOOD STAGE IS 20.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4131 8940 4135 8933 4137 8898 4128 8899
4128 8929
ILC201-211045-
/O.CON.KLOT.FL.W.0028.000000T0000Z-000000T0000Z/
/SIRI2.2.ER.260418T0022Z.260420T1800Z.260425T0000Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...PECATONICA RIVER FROM WINNEBAGO COUNTY LINE DOWNSTREAM TO
CONFLUENCE WITH THE ROCK RIVER, INCLUDING THE SHIRLAND GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* IMPACTS...AT 14.0 FEET, STRUCTURES THREATENED AT RIVERS EDGE
CAMPGROUND EAST OF SHIRLAND.
* ADDITIONAL DETAILS...
- AT 11:00 AM CDT MONDAY THE STAGE WAS 14.1 FEET.
- RECENT ACTIVITY...THE RIVER IS CURRENTLY CRESTING NEAR 14.1
FEET.
- FORECAST...THE RIVER IS EXPECTED TO BEGIN A SLOW FALL BY
TOMORROW.
- FLOOD STAGE IS 12.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4236 8940 4247 8922 4249 8909 4242 8907
4240 8917 4226 8940
ILC201-211045-
/O.CON.KLOT.FL.W.0025.000000T0000Z-000000T0000Z/
/ROKI2.2.ER.260416T2122Z.260419T0445Z.000000T0000Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...ROCK RIVER FROM PRAIRIE HILL ROAD DOWNSTREAM TO SWANSON
ROAD IN ROSCOE, INCLUDING THE ROCKTON GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* IMPACTS...AT 12.0 FEET, MULTIPLE LOW-LYING ROADS THREATENED ALONG
THE RIVER IN ROSCOE.
* ADDITIONAL DETAILS...
- AT 10:30 AM CDT MONDAY THE STAGE WAS 12.2 FEET.
- RECENT ACTIVITY...THE RIVER CRESTED YESTERDAY AT 12.5 FEET,
AND HAS BEGUN A SLOW FALL.
- FORECAST...THE RIVER WILL CONTINUE A SLOW FALL OVER THE NEXT
SEVERAL DAYS.
- FLOOD STAGE IS 10.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4248 8910 4247 8902 4245 8902 4239 8898
4239 8908 4246 8912
ILC201-211045-
/O.CON.KLOT.FL.W.0024.000000T0000Z-000000T0000Z/
/LATI2.2.ER.260416T1543Z.260419T1330Z.000000T0000Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...ROCK RIVER FROM SWANSON ROAD IN ROSCOE DOWNSTREAM TO
SHOREWOOD PARK IN LOVES PARK, INCLUDING THE LATHAM PARK GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* IMPACTS...AT 11.5 FEET, QUEEN OAKS DRIVE IS THREATENED IN
MACHESNEY PARK. LOWER-LEVEL OF ELEVATED STRUCTURES THREATENED
ALONG HARBOR LIGHTS COURT WEST OF MACHESNEY PARK. RITTER DRIVE IS
THREATENED NORTH OF BALDWIN DRIVE IN MACHESNEY PARK.
* ADDITIONAL DETAILS...
- AT 10:30 AM CDT MONDAY THE STAGE WAS 11.5 FEET.
- RECENT ACTIVITY...THE RIVER CRESTED YESTERDAY AT 11.9 FEET
AND HAS BEGUN A SLOW FALL.
- FORECAST...THE RIVER WILL CONTINUE A SLOW FALL OVER THE NEXT
SEVERAL DAYS.
- FLOOD STAGE IS 9.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4239 8908 4239 8898 4230 8903 4230 8911
ILC089-093-211045-
/O.CON.KLOT.FL.W.0022.000000T0000Z-000000T0000Z/
/MNGI2.1.ER.260416T0800Z.260418T2200Z.000000T0000Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* WHERE...FOX RIVER FROM RED GATE ROAD IN ST. CHARLES DOWNSTREAM TO
MILLINGTON, INCLUDING THE MONTGOMERY GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* 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 MONDAY THE STAGE WAS 13.6 FEET.
- RECENT ACTIVITY...THE RIVER STAGE HAS BEEN RELATIVELY STEADY
JUST ABOVE FLOOD STAGE THE LAST FEW DAYS.
- FORECAST...THE RIVER IS EXPECTED TO REMAIN NEAR FLOOD STAGE
FOR THE NEXT SEVERAL DAYS.
- FLOOD STAGE IS 13.5 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4195 8838 4194 8827 4169 8826 4154 8860
4163 8860 4173 8838
ILC031-097-211045-
/O.CON.KLOT.FL.W.0020.000000T0000Z-000000T0000Z/
/LDRI2.2.ER.260416T0400Z.260420T1800Z.260423T1330Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...DES PLAINES RIVER FROM TOWNLINE ROAD IN LIBERTYVILLE
DOWNSTREAM TO PALATINE ROAD IN PROSPECT HEIGHTS, INCLUDING THE
LINCOLNSHIRE GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* IMPACTS...AT 15.0 FEET, STRUCTURES THREATENED ALONG IL-22
(HALF-DAY ROAD) JUST EAST OF THE RIVER. MULTIPLE STRUCTURES
THREATENED NEAR AND WEST OF US-45 (MILWAUKEE AVENUE) AND DEERFIELD
ROAD. DEERFIELD ROAD THREATENED NEAR THE RIVER. MULTIPLE TRAILS
INUNDATED IN HALF-DAY FOREST PRESERVE.
* ADDITIONAL DETAILS...
- AT 10:45 AM CDT MONDAY THE STAGE WAS 15.2 FEET.
- RECENT ACTIVITY...THE RIVER IS CURRENTLY CRESTING NEAR 15.2
FEET.
- FORECAST...THE RIVER IS EXPECTED TO BEGIN A SLOW FALL BY
TOMORROW.
- FLOOD STAGE IS 12.5 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4224 8797 4224 8788 4212 8784 4212 8794
ILC097-211045-
/O.CON.KLOT.FL.W.0018.000000T0000Z-000000T0000Z/
/RUSI2.2.ER.260415T1155Z.260419T1530Z.260426T0600Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...DES PLAINES RIVER FROM IL/WI STATE LINE DOWNSTREAM TO
US-41 IN GURNEE, INCLUDING THE RUSSELL GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* IMPACTS...AT 9.5 FEET, RESIDENTIAL STRUCTURES THREATENED ALONG
RUSSELL ROAD BETWEEN THE RIVER AND KILBOURNE ROAD. INDUSTRIAL
PARKING LOTS THREATENED ALONG KILBOURNE ROAD.
* ADDITIONAL DETAILS...
- AT 10:30 AM CDT MONDAY THE STAGE WAS 9.4 FEET.
- RECENT ACTIVITY...THE RIVER CRESTED YESTERDAY AT 9.6 FEET AND
HAS BEGUN A SLOW FALL.
- FORECAST...THE RIVER IS EXPECTED TO CONTINUE A SLOW FALL THE
NEXT SEVERAL DAYS.
- FLOOD STAGE IS 7.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4251 8797 4250 8787 4247 8789 4239 8787
4239 8796 4247 8799
ILC097-211045-
/O.CON.KLOT.FL.W.0017.000000T0000Z-000000T0000Z/
/GUNI2.2.ER.260415T0856Z.260419T1530Z.260424T0600Z.NO/
1136 AM CDT MON APR 20 2026
..FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE
* WHAT...MODERATE FLOODING IS OCCURRING AND MODERATE FLOODING IS
FORECAST.
* WHERE...DES PLAINES RIVER FROM US-41 IN GURNEE DOWNSTREAM TO
TOWNLINE ROAD IN VERNON HILLS, INCLUDING THE GURNEE GAUGE.
* WHEN...UNTIL FURTHER NOTICE.
* IMPACTS...AT 11.0 FEET, US-41 (SKOKIE HIGHWAY) THREATENED NEAR THE
RIVER IN GURNEE. MUNDELEIN WATER RECLAMATION FACILITY PROPERTY IS
THREATENED NEAR LIBERTYVILLE.
* ADDITIONAL DETAILS...
- AT 10:30 AM CDT MONDAY THE STAGE WAS 10.6 FEET.
- RECENT ACTIVITY...THE RIVER CRESTED YESTERDAY AT 10.7 FEET
AND HAS BEGUN A SLOW FALL.
- FORECAST...THE RIVER IS EXPECTED TO CONTINUE A SLOW FALL THE
NEXT SEVERAL DAYS.
- FLOOD STAGE IS 7.0 FEET.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
LAT...LON 4239 8796 4239 8787 4230 8791 4224 8788
4224 8797 4230 8800
DK
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