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Hydrologic Outlook

Hydrologic Outlook

Hydrologic Outlook
National Weather Service Chicago IL
410 AM CDT Wed Jul 26 2017 /510 AM EDT Wed Jul 26 2017/


Thunderstorms are expected to develop across the area by this
evening, with the return of a very humid air mass which will
support the potential for heavy rainfall. While some uncertainty
still exists as to the exact location where the heaviest rains
will occur, areas south of a Dixon to Joliet to Rensselaer line
appear to have the greatest potential to see higher rainfall
amounts, potentially of 1 to 3 inches.

Given wet ground conditions from recent heavy rains, any
locations that receive additional heavy rainfall tonight into
early Thursday will likely be more susceptible to flooding than
normal. In addition, this would likely cause additional rises on
portions of the Illinois and Kankakee Rivers, where rises have
already occurred from recent rains.

Those with hydrologic concerns in these areas should maintain a
close watch on actual rainfall amounts and river stage forecasts.
Be sure to monitor later forecasts for updates on the heavy rain
and flooding potential tonight into early Thursday.



Hydrologic Outlook

Hydrologic Outlook
National Weather Service Lincoln IL
1156 AM CDT Tue Jul 25 2017

This hydrologic outlook includes the following rivers:

Illinois River...

The following river information is based on future predicted
rainfall. Upstream discharge, along with additional rainfall from an
approaching mid-week system will cause the river to rise, but is
forecast to remain below flood stage. Since the river is forecast to
remain below flood stage, this will be the last statement for this

For the Illinois River at Peoria...the latest stage is 15.9 feet at
12 PM Tuesday. Flood stage is 18.0 feet. No flooding is forecast. At
17.5 feet...Water approaches Spring Bay Park.


                  Fld  Observed         Forecast 6AM
Location          Stg  Stg  Day Time    Wed    Thu    Fri

Illinois River
 Peoria            18  15.9 Tue 12 PM   16.6   17.3   17.5



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