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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Attention hunters: Visit our FAQ page for information about the use of centerfire, single-shot rifles for deer hunting in Illinois. 

Floodplain Publications And Guides

Floodplain Publications

Quick Guide to Floodplain Management (PDF)

Illinois Local Floodplain Administrators Manual (Blue book) 2006 (PDF)

North Eastern IL Local Floodplain Administrators Manual (Green book) 2006 (PDF)

Protecting Your Home And Property From Flood Damage, August 2008 (PDF)

Our Community & Flooding, October 1998 (PDF)

Floodplain Management Resource Guide for Illinois Communities, September 2024 (PDF)

Discharge Certification Form 

Hydrology/Flow Approval Checklist (PDF)

So, You Live Behind A Levee