Will the levee prevent future flooding within the subdivision?
There are no assurances when we are dealing with Mother Nature; however, we know that the levee as currently built would have contained all known floods since the subdivision was built in 1954. The U.S. Army Corp of Engineers determined the levee provides protection against a 33 year flood event. This means that, on average, a flood that the levee cannot contain could occur one time every 33-year period. In other words, in any particular year there is a 3% probability of a flood that the levee cannot contain. The chance of a flood occurring is based on the average of what is expected over a long period of time. For a comparison of past flood levels to the height of the levee, see the attached map (PDF).

Show All Answers

1. What are the basic levee features?
2. Who inspects and maintains the North Libertyville Levee?
3. Will the levee prevent future flooding within the subdivision?
4. Do residents of North Libertyville Estates need flood insurance?
5. Is there a flood warning plan?
6. The bimonthly sewer/water bill for North Libertyville Estates customers includes a $10 levee maintenance fee. How are these fees used?
7. What else should residents know about living next to the levee?