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Rain and Flooding?

(2 posts)
  • Started 2 years ago by ChrisHajer
  • Latest reply from spatny

  1. ChrisHajer
    Member

    http://ahps2.wrh.noaa.gov/ahps2/ahps_warnings.php?wfo=lot&zone=ILC031,ILZ014

    Flood Advisory

    WGUS83 KLOT 301453
    FLSLOT
    FLOOD ADVISORY
    NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
    953 AM CDT FRI OCT 30 2009

    ...THE FLOOD ADVISORY CONTINUES FOR THE DES PLAINES RIVER...FOX
    RIVER...

    DES PLAINES RIVER AT RIVERSIDE AFFECTING COOK COUNTY
    FOX RIVER AT ALGONQUIN AFFECTING KANE AND MCHENRY COUNTIES
    FOX RIVER AT MONTGOMERY AFFECTING KANE AND KENDALL COUNTIES

    .RAINFALL OF BETWEEN 1 AND 2 INCHES OVERNIGHT IS RESULTING IN
    RISES ON AREA RIVERS. WATER LEVELS WILL LIKELY REMAIN HIGH
    THROUGH THE WEEKEND.

    &&

    http://www.crh.noaa.gov/ahps2/hydrograph.php?wfo=lot&gage=rvri2&type=2&view=1,1,1,1,1,1

    The graph shows a peak of 6.2ft 1PM Saturday, but flood stage is 7ft? So, why the flood advisory?

    Posted Friday Oct 30, 2009 10:35 #

  2. spatny
    Member

    Because it starts to effect Forest Preserve and parks at more than 6 feet, both through overflow and water percolating up. There has been some standing water for the last few days in several of the parks.

    Posted Friday Oct 30, 2009 11:07 #

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