title
PROPOSED SUBSTITUTE TO FILE 19-5803
PROPOSED ORDINANCE AMENDMENT
AMENDMENT TO THE FLOODPLAIN ORDINANCE
BE IT ORDAINED, by the Cook County Board of Commissioners that Chapter 106 - Floodplains, Sections 106-2, 106-5, 106-6, 106-7, and 106-8 is hereby amended to read as follows:
Sec. 106-2. - Definitions
***
Designated Floodway means the channel, including on-stream lakes, and that portion of the floodplain adjacent to a stream or watercourse as designated by IDNR/OWR, which is needed to store and convey the existing 100-year frequency flood discharge with no more than a 0.1 foot increase in stage due to the loss of flood conveyance or storage, and no more than a ten percent increase in velocities.
(1) The floodways are designated on the countywide Flood Insurance Rate Map for Cook County number 17031C, panels 15-609, 616, 628, 637-701, 706, and 708-832, dated August 19, 2008, panels 611-614, 617-619, 636, 702-704, 707 dated November 1, 2019 prepared by FEMA.
***
Floodplain means that land typically adjacent to a body of water with ground surface elevations at or below the base flood or the 100-year frequency flood elevation. Floodplains may also include detached special flood hazard areas (SFHAs), ponding areas, etc. The floodplain is also known as the special flood hazard area (SFHA). The floodplains are those lands within the jurisdiction of the County that are subject to inundation by the base flood or 100-year frequency flood. The special flood hazard areas (SFHAs) of the County are generally identified on the Countywide flood insurance rate map (FIRM) for Cook County number 17031C, prepared by the Federal Emergency Management Agent[Agency], panels 15-609, 616, 628, 637-701, 706, and 708-832 and dated August 19, 2008, and panels 611-614, 617-619, 636, 702-704, 707 dated November 1, 2019.
***
NGVD means the National Geodetic Vertical Datum of 1929. Reference surface set by the National Geodetic Survey deduced from a continental...
Click here for full text