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City staff outlines draft floodplain ordinance adding rolling 10-year window; residents press for local drainage studies and buyout clarity
Summary
City staff presented a draft floodplain ordinance that would use a rolling 10-year period to measure cumulative substantial damage and improvements; staff also said it will review state buyout options and complete a Deer Creek engineering study. Several residents urged clearer historical analysis, documentation and targeted projects upstream.
City staff briefed the Community Development Committee on a draft floodplain-ordinance update that would change the way the city counts cumulative substantial damage and improvements by applying a rolling 10-year period rather than counting lifetime accumulations.
Staff said the proposal follows guidance from the Illinois State National Flood Insurance Program coordinator and FEMA definitions (substantial damage or substantial improvement equals work or damage that equals or exceeds 50% of a structure’s pre-damage market value). The draft ordinance is under legal review and will be sent to the Illinois Department of Natural Resources for formal approval before it returns to the committee for reading and public discussion.
Staff iden…
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