Valley Final Conditions Stormwater Analysis
Valley is a levee protected community of approximately 4,500 acres inside
the corporate limits of the City of Chesterfield. Levee protected
areas are considered "Special Flood Hazard Area" (SFHA) by the
federal government and development within the SFHA must comply with local
floodplain management ordinances. Local ordinances must in turn meet
minimum Federal standards. The City of Chesterfield elected to use
ICPR as its final storm drainage model of the Chesterfield Valley to
assist in qualifying for the National
Flood Insurance Program
(NFIP). ICPR is listed as a nationally approved hydraulic model by
the Federal Emergency Management Agency (FEMA) who administer the NFIP.
objective of this investigation is to determine the flood elevations
throughout Chesterfield Valley for a 100-year rainfall event for existing
conditions and to prepare a drainage master plan to accommodate fully
developed, future condition build-out according to the City's Adopted
Comprehensive Master Plan. This adopted comprehensive flood
management plan serves as a tool in the Chesterfield Valley Storm Water
Ordinance to reduce future flood risks safely and with sound floodplain
management, a requirement of the National Flood Insurance Program.
ICPR model will be updated regularly to reflect changes in the watershed.
City of Chesterfield is located in Missouri 22 miles west of St.
Louis. Chesterfield Valley is situated along the south side of the
more information on this project, please contact Kimberly
McMahan with the City of Chesterfield.
City of Chesterfield