What matters for project planning
The most useful thing in this framework after a water event is diagnostic rather than procedural. Champaign permits connections to the municipal stormwater drainage system and requires stormwater control plans for qualifying construction because water on this flat, slow-draining ground has to be managed deliberately — and that is exactly why intrusion here is frequently stormwater arriving at grade rather than a failed fixture. Standard policies exclude flood and surface water, so establishing which one occurred matters before anything is moved. Reconstruction may separately require permits.
Official sources
Verify the property, not just the city
Citywide context cannot establish a parcel’s flood zone, historic designation, permit requirements, soil conditions, or concealed construction. Get the parcel's specific flood zone, historic status, and permit requirements from the relevant Champaign authority before authorizing anything -- citywide policy won't answer those questions.
Sources reviewed 2026-07-26. Both the city's stormwater rules and the county partnership's maps can change after this page was written, so re-verify before relying on them.