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Flood Watch — Rock Island, IL, Mercer, IL, Henderson, IL, Hancock, IL, Clark, MO
Flood Watch
Issued
10:36 PM CDT · Mon, Sep 21 2026
Expires
9:00 AM CDT · Thu, Sep 24 2026
Issuing Office
NWS KDVN

Affected Areas

Rock Island, IL Mercer, IL Henderson, IL Hancock, IL Clark, MO

Official Bulletin

547
WGUS63 KDVN 200312
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Quad Cities IA IL
1012 PM CDT Sat Sep 19 2026

...The National Weather Service in Quad Cities has issued a Flood
Watch for the following rivers in Illinois...Iowa...Missouri...

  Mississippi River at Rock Island LD15 affecting Scott, Muscatine
  and Rock Island zones.

  Mississippi River at Muscatine affecting Mercer, Muscatine, Rock
  Island and Louisa Counties.

  Mississippi River at New Boston LD17 affecting Mercer and Louisa
  Counties.

  Mississippi River at Gladstone LD18 affecting Des Moines and
  Henderson Counties.

  Mississippi River at Keithsburg affecting Henderson, Des Moines,
  Louisa and Mercer Counties.

  Mississippi River at Ill. City LD16 affecting Muscatine and Rock
  Island zones.

  Mississippi River at Burlington affecting Hancock, Des Moines,
  Henderson and Lee Counties.

  Mississippi River at Gregory Landing affecting Hancock and Clark
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor
rising water levels and be prepared for possible Flood Warnings.

Stay tuned to further developments by listening to your local radio,
television, or NOAA Weather Radio for further information.

The next statement will be issued by Sunday evening.

&&

IAZ067-068-ILZ015-210315-
/O.NEW.KDVN.FL.A.0048.260922T0336Z-260924T1400Z/
/RCKI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM MONDAY EVENING TO THURSDAY MORNING...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Rock Island LD15.

* WHEN...From Monday evening to Thursday morning.

* ADDITIONAL DETAILS...
  - At 9:00 PM CDT Saturday the stage was 7.4 feet.
  - Forecast...Flood stage may be reached late Monday evening.
  - Flood stage is 15.0 feet.

&&

LAT...LON 4146 9086 4156 9046 4152 9043 4143 9066
      4141 9085

$$

IAZ067-078-ILZ015-024-210315-
/O.NEW.KDVN.FL.A.0049.260922T0600Z-260925T0800Z/
/MUSI4.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM LATE MONDAY NIGHT TO LATE THURSDAY
NIGHT...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Muscatine.

* WHEN...From late Monday night to late Thursday night.

* ADDITIONAL DETAILS...
  - At 8:15 PM CDT Saturday the stage was 7.6 feet.
  - Forecast...Flood stage may be reached early Tuesday morning.
  - Flood stage is 16.0 feet.

&&

LAT...LON 4141 9108 4144 9103 4140 9102 4124 9108
      4124 9114

$$

IAZ078-ILZ024-210315-
/O.NEW.KDVN.FL.A.0050.260922T1000Z-260925T1800Z/
/NBOI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM LATE MONDAY NIGHT TO FRIDAY
AFTERNOON...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at New Boston LD17.

* WHEN...From late Monday night to Friday afternoon.

* ADDITIONAL DETAILS...
  - At 9:10 PM CDT Saturday the stage was 7.2 feet.
  - Forecast...Flood stage may be reached early Tuesday morning.
  - Flood stage is 15.0 feet.

&&

LAT...LON 4124 9114 4124 9108 4116 9097 4117 9106
      4119 9111

$$

IAZ089-ILZ025-210315-
/O.NEW.KDVN.FL.A.0052.260922T1300Z-260926T1600Z/
/GLDI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM TUESDAY MORNING TO SATURDAY MORNING...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Gladstone LD18.

* WHEN...From Tuesday morning to Saturday morning.

* ADDITIONAL DETAILS...
  - At 9:00 PM CDT Saturday the stage was 3.0 feet.
  - Forecast...Flood stage may be reached Tuesday morning.
  - Flood stage is 10.0 feet.

&&

LAT...LON 4094 9099 4091 9094 4084 9105 4086 9110

$$

IAZ078-089-ILZ024-025-210315-
/O.NEW.KDVN.FL.A.0051.260922T1300Z-260926T0800Z/
/KHBI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM TUESDAY MORNING TO LATE FRIDAY NIGHT...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Keithsburg.

* WHEN...From Tuesday morning to late Friday night.

* ADDITIONAL DETAILS...
  - At 8:30 PM CDT Saturday the stage was 7.6 feet.
  - Forecast...Flood stage may be reached Tuesday morning.
  - Flood stage is 14.0 feet.

&&

LAT...LON 4117 9106 4116 9097 4108 9091 4091 9094
      4094 9099

$$

IAZ067-ILZ015-210315-
/O.NEW.KDVN.FL.A.0053.260922T1424Z-260924T2300Z/
/ILNI2.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM TUESDAY MORNING TO THURSDAY EVENING...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Ill. City LD16.

* WHEN...From Tuesday morning to Thursday evening.

* ADDITIONAL DETAILS...
  - At 9:00 PM CDT Saturday the stage was 5.6 feet.
  - Forecast...Flood stage may be reached late Tuesday morning.
  - Flood stage is 15.0 feet.

&&

LAT...LON 4144 9103 4146 9086 4141 9085 4140 9102

$$

IAZ089-099-ILZ025-034-210315-
/O.NEW.KDVN.FL.A.0054.260922T1800Z-260926T1000Z/
/BRLI4.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON TO LATE FRIDAY
NIGHT...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Burlington.

* WHEN...From Tuesday afternoon to late Friday night.

* ADDITIONAL DETAILS...
  - At 9:00 PM CDT Saturday the stage was 8.7 feet.
  - Forecast...Flood stage may be reached early Tuesday afternoon.
  - Flood stage is 15.0 feet.

&&

LAT...LON 4086 9110 4084 9105 4062 9108 4061 9142
      4067 9118

$$

ILZ034-MOZ010-210315-
/O.NEW.KDVN.FL.A.0055.260922T2000Z-260926T1900Z/
/GGYM7.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1012 PM CDT Sat Sep 19 2026

...FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON TO SATURDAY
AFTERNOON...

* WHAT...Flooding is possible.

* WHERE...Mississippi River at Gregory Landing.

* WHEN...From Tuesday afternoon to Saturday afternoon.

* ADDITIONAL DETAILS...
  - At 9:00 PM CDT Saturday the stage was 7.6 feet.
  - Forecast...Flood stage may be reached Tuesday afternoon.
  - Flood stage is 15.0 feet.

&&

LAT...LON 4022 9154 4039 9149 4038 9134 4029 9143
      4022 9142

$$

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