What this means for planning
The City of Waukegan's Engineering Department requires a Watershed Development Ordinance (WDO) permit for regulated development and work in the floodplain or floodway, per Lake County's Watershed Development Ordinance as adopted in City Ordinance Section 18-10. Because Waukegan's lakefront terrain includes ravines and mapped flood hazard areas, parcel-specific floodplain status and permit requirements should be confirmed with the city before foundation, grading, or exterior work begins.
Official sources
A citywide rule is not a parcel answer
Citywide context can't settle one lot's flood zone, historic designation, stream buffer, permit needs, soil conditions, or hidden construction. Confirm those specifics with the appropriate authority and the selected provider before work begins.
Sources reviewed 2026-07-26. External requirements and maps can change.