cook County Flood Hazard Information
Effective Map Products
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 Revision (LOMR).
Effective Flood Insurance Rate Maps for cook 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
2021 Preliminary products and 2022 Revised Preliminary products are available below, or at higher resolution from the FEMA MSC:
17031C0013K
17031C0014K
17031C0018K
17031C0019K
17031C0142K
17031C0144K
17031C0151K
17031C0152K
17031C0153K
17031C0154K
(revised 11/18/2022)
17031C0156K
(revised 11/18/2022)
17031C0157K
17031C0158K
17031C0159K
17031C0161K
17031C0162K
17031C0163K
17031C0164K
17031C0166K
17031C0167K
17031C0168K
17031C0169K
17031C0176K
17031C0178K
17031C0186K
Index panel 1
(revised 11/18/2022)
Index panel 2
Index panel 3
Index panel 4
Preliminary FIS
(revised 11/18/2022)
Preliminary FIRM Database
(revised 11/18/2022)
Changes Since Last FIRM
Consultation Coordination Officer (CCO) Meeting
12/16/2021
Public Open House Meeting
3/30/2022
Discovery Phase
- Chicago River Watershed Discovery
- Des Plaines Watershed Discovery
- Lower Fox Watershed Discovery
- Upper Fox Watershed Discovery
- Draft Cook County Total Wetness Index Geodatabase (zip)