545  
WGUS83 KDMX 200059  
FLSDMX  
 
FLOOD STATEMENT  
NATIONAL WEATHER SERVICE DES MOINES IA  
759 PM CDT TUE AUG 19 2025  
 
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN IOWA...  
 
CEDAR RIVER AT CEDAR FALLS AFFECTING BLACK HAWK COUNTY.  
 
SHELL ROCK RIVER AT SHELL ROCK AFFECTING BREMER, BLACK HAWK AND  
BUTLER COUNTIES.  
   
..THE FLOOD WARNING IS EXTENDED FOR THE FOLLOWING RIVERS IN IOWA  
 
WINNEBAGO RIVER AT MASON CITY AFFECTING WORTH, FLOYD AND CERRO  
GORDO COUNTIES.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
FOR THE LATEST STREAM OBSERVATIONS AND FORECASTS REFER TO  
WEATHER.GOV/DESMOINES/WATER.  
 
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD  
DEATHS OCCUR IN VEHICLES.  
 
RIVER FORECASTS INCLUDE OBSERVED PRECIPITATION PLUS FORECAST  
PRECIPITATION OVER THE NEXT 24 HOURS.  
 
 
 
IAC013-017-023-202100-  
/O.EXT.KDMX.FL.W.0019.000000T0000Z-250822T1800Z/  
/SHRI4.1.ER.250820T0141Z.250820T1800Z.250822T1200Z.NO/  
759 PM CDT TUE AUG 19 2025  
   
..FLOOD WARNING NOW IN EFFECT UNTIL EARLY FRIDAY AFTERNOON  
 
* WHAT...MINOR FLOODING IS FORECAST.  
 
* WHERE...THE SHELL ROCK RIVER AT SHELL ROCK, OR FROM FLOOD CREEK  
NEAR CLARKSVILLE TO THE CEDAR RIVER.  
 
* WHEN...UNTIL EARLY FRIDAY AFTERNOON.  
 
* IMPACTS...AT 12.5 FEET, SEEPAGE OCCURS IN SEVERAL BASEMENTS CLOSE  
TO THE RIVER.  
 
* ADDITIONAL DETAILS...  
- AT 6:45 PM CDT TUESDAY THE STAGE WAS 11.9 FEET.  
- FORECAST...THE RIVER IS EXPECTED TO RISE ABOVE FLOOD STAGE  
THIS EVENING TO A CREST OF 12.6 FEET EARLY TOMORROW  
AFTERNOON. IT WILL THEN FALL BELOW FLOOD STAGE FRIDAY  
MORNING.  
- FLOOD STAGE IS 12.0 FEET.  
 
 
 
LAT...LON 4261 9249 4265 9255 4282 9280 4286 9268  
4269 9249  
 
 
 
IAC033-067-195-202100-  
/O.EXT.KDMX.FL.W.0018.000000T0000Z-250821T0600Z/  
/MCWI4.1.ER.250818T1739Z.250819T1030Z.250821T0000Z.NO/  
759 PM CDT TUE AUG 19 2025  
   
..FLOOD WARNING NOW IN EFFECT UNTIL EARLY THURSDAY MORNING  
 
* WHAT...MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.  
 
* WHERE...THE WINNEBAGO RIVER AT MASON CITY, OR FROM BEAVER CREEK  
NEAR FERTILE TO THE SHELL ROCK RIVER NEAR ROCKFORD.  
 
* WHEN...UNTIL EARLY THURSDAY MORNING.  
 
* IMPACTS...AT 11.0 FEET, SANDBAGGING OCCURS ON THE DIKE FROM 12TH  
ST NE TO CAROLINA ST.  
 
* ADDITIONAL DETAILS...  
- AT 7:15 PM CDT TUESDAY THE STAGE WAS 10.7 FEET.  
- FORECAST...THE RIVER IS EXPECTED TO FALL BELOW FLOOD STAGE  
TOMORROW EVENING AND CONTINUE FALLING TO 7.3 FEET TUESDAY,  
AUGUST 26.  
- FLOOD STAGE IS 10.0 FEET.  
 
 
 
LAT...LON 4331 9330 4308 9287 4300 9301 4326 9350  
 
 
 
IAC013-202100-  
/O.EXT.KDMX.FL.W.0020.250820T2230Z-250823T1434Z/  
/CEDI4.1.ER.250820T2230Z.250822T0000Z.250823T0834Z.NO/  
759 PM CDT TUE AUG 19 2025  
 
...FLOOD WARNING NOW IN EFFECT FROM WEDNESDAY AFTERNOON TO LATE  
SATURDAY MORNING...  
 
* WHAT...MINOR FLOODING IS FORECAST.  
 
* WHERE...THE CEDAR RIVER AT CEDAR FALLS, OR FROM THE WEST FORK  
CEDAR RIVER TO THE CEDAR FALLS-WATERLOO CITY LIMITS.  
 
* WHEN...FROM WEDNESDAY AFTERNOON TO LATE SATURDAY MORNING.  
 
* IMPACTS...AT 91.0 FEET, WATER AFFECTS BIG WOODS RD SOUTH OF  
DUNKERTON RD AS WELL AS THE NORTH PARKING LOT OF ISLAND PARK.  
 
* ADDITIONAL DETAILS...  
- AT 6:45 PM CDT TUESDAY THE STAGE WAS 85.3 FEET.  
- FORECAST...THE RIVER IS EXPECTED TO RISE ABOVE FLOOD STAGE  
TOMORROW AFTERNOON TO A CREST OF 90.7 FEET THURSDAY EVENING.  
IT WILL THEN FALL BELOW FLOOD STAGE EARLY SATURDAY MORNING.  
- FLOOD STAGE IS 89.0 FEET.  
 
 
 
LAT...LON 4256 9238 4249 9247 4258 9255 4262 9255  
4262 9241  
 
 
 
DONAVON  
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