McDonough County Flood Hazard Information
Currently Effective Map Products (click to show)
Effective Regulatory Products
Effective products are the official regulatory products as adopted by FEMA and a given local community for the National Flood Insurance Program (NFIP). The products are intended to be used as the basis for official actions required by the NFIP. The products may include Flood Insurance Rate Maps (FIRM), Flood Insurance Study (FIS) reports, FIRM Databases, and effective Letters of Map Change (LOMC).
Effective Flood Insurance Rate Maps for McDonough County may be viewed and/or downloaded at the FEMA Flood Map Service Center (MSC)
Additionally, effective flood hazard data can be viewed in FEMA's National Flood Hazard Layer viewer (NFHL). Counties with a status of Effective or any of the PMR statuses (symbolized with diagonal lines) on the Resources by County map are included in the NFHL viewer. Zoom to an area or use the search bar to find a specific location. Full FIRM panels or a “FIRMette” of a smaller area can be exported using the NFHL Print Tool.
Non-regulatory Products
Non-regulatory products, referred to as Flood Risk Products (FRP), go beyond the basic flood hazard information found in the official regulatory products. The Flood Risk Database, which parallels the FIRM database, provides a wealth of data that may be used to analyze, communicate, and visualize flood risk. Communities are encouraged to use this database to support mitigation efforts and raise awareness. Non-Regulatory products such as Flood Risk Databases are also available at the MSC.
Mapping Phase
Preliminary Map Products
Released 11/4/2024, Preliminary products are available below, or at higher resolution from the FEMA MSC:
17109C0025C
17109C0050C
17109C0100C
17109C0113C
17109C0142C
17109C0150C
17109C0161C
17109C0169C
17109C0175C
17109C0188C
17109C0189C
17109C0191C
17109C0200C
17109C0217C
17109C0225C
17109C0236C
17109C0250C
17109C0275C
17109C0284C
17109C0285C
17109C0300C
17109C0301C
17109C0302C
17109C0303C
17109C0304C
17109C0306C
17109C0307C
17109C0308C
17109C0309C
17109C0312C
17109C0315C
17109C0320C
17109C0327C
17109C0331C
17109C0350C
17109C0375C
17109C0400C
17109C0425C
17109C0450C
17109C0461C
17109C0475C
17109C0500C
Index
Preliminary FIS
Preliminary FIRM Database
Download All (Panels, FIS, Database)
Changes Since Last FIRM
Data Development Phase
Flood Risk Review Meeting
5/18/2023
- Meeting Recording:
- Watch Video (hosted on Illinois Media Space)
-  Download MP4 (83 MB)
- Meeting Presentation (PDF)
Project Initiation Coordination Call
10/13/2020
- Meeting Recording:
- Watch Video (hosted on Illinois Media Space)
-  Download MP4 (195 MB)
- Meeting Presentation (PDF)
Additional Resources
- • Floodplain Mapping 101
- • Destined for DFIRMs
- • Building Footprints
- • Topographic Wetness Index
- • Links to National Flood Insurance Program (NFIP) Information