2021 Updated Flood Insurance Rate Maps (FIRMs)

In 2015, the City of St. Charles elected to pursue the Seclusion option concerning an area affected by the decertification of the Boschert Creek Levee (a non-accredited levee system generally located between Boschertown Road and New Town Boulevard within Ward 8). The City selected this option due to the number of properties which would be required to obtain flood insurance based upon the decertification and to work with FEMA to more accurately study this area. The Seclusion option also allowed the City to move forward and adopt the other Flood Insurance Rate Maps (FIRMs) City wide (in review since 2009 and adopted in 2016).  

From March 2017 to present, City Staff from the Departments of Community Development, Engineering and Public Works have worked with FEMA officials to review the area affected by the levee decertification and identify the risk of flooding. After months of review, FEMA issued a Letter of Final Determination which indicated the FIRM’s must be approved by March 9th, 2021. In order to remain in good standing with the National Flood Insurance Program, the City has adopted the following approval schedule:

• January 5th, 2021 at 7:00 p.m. – Public Hearing and Introduction of an Ordinance before the City Council.

• January 19th, 2021 at 7:00 p.m. – Final Passage of the Ordinance before the City Council.

The new FIRMs  29183C0260H and 29183C0280H dated March 9th, 2021 can be viewed by using the link. If you have any questions associated with this mapping project, you may submit questions and comments to the Department of Community Development by mail to the Department of Community Development, 200 North Second Street, Room 303, St. Charles, MO 63301 Attention John Boyer, by email to john.boyer@stcharlescitymo.gov or by phone at 636-949-3221.

PLEASE NOTE: Letters to properties within 100 feet of the changed flood boundary have been mailed by the City. Please be aware, receipt of this letter does not guarantee your property will be affected by the map change. The 100 foot buffer from the floodplain was chosen to insure proper public notification of the map changes. Please contact staff for more specific information regarding your property.

Area Under Review

To further assist, the following links have been provided as well below.

New Interactive Map for the affected area

2021 Updated FIRMS:
Map Panel-29183C0260H
Map Panel-29183C0280H

2016-2021 Comparison Maps:
Map Panel 260
Map Panel 280

FAQ’s (Frequently Asked Questions)

Flood Insurance Study Report (FIS)


FEMA Risk Map


If you have specific questions, please feel free to contact John Boyer, Planning Manager via email at john.boyer@stcharlescitymo.gov or at 636-949-3222.