Middleton staff say Madison projects and updated rainfall estimates could raise peak flows; group agrees to proceed with remap using updated 100‑year rainfall

City of Middleton staff and their consultant reviewed modeling showing that near‑term drainage projects in Madison and updated rainfall estimates raise peak flows for smaller, more frequent storms and can raise the 100‑year water surface in upstream ponds. The group recommended modest model updates and to proceed with floodplain remapping using the higher 100‑year rainfall estimate while pursuing collaboration with Madison.