New Berlin, WI Environmental Rules: Flood Zones (2026)

23, Wis. 30, Wis. , codified locally at § 275-65 of the Zoning Chapter. The section regulates every area covered by the regional or base flood as shown on FEMA's Flood Insurance Rate Map (FIRM) and the accompanying Flood Insurance Study, splitting the mapped area into a Floodway District (§ 275-65 C), a Floodfringe District (§ 275-65 D), and, where a floodway has not been separately delineated, a General Floodplain District covering Zones A, AO and AH (§ 275-65 E). Under the general-provisions compliance clause, § 275-65 B(5)(f), no structure or use in any of these regulated areas may be located, erected, constructed, reconstructed, repaired, extended, converted, enlarged or altered without full compliance with the section and every other applicable local, state and federal rule, and proceeding without the required floodplain development permit is itself a violation.

S. Army Corps of Engineers where the Clean Water Act reaches the site. The Department of Community Development reviews applications and advises the Plan Commission and Common Council, and FEMA-approved maps, flood profiles, floodway data tables and letters of map amendment or revision are kept on file with the Department. Land cannot be removed from the mapped floodplain simply by filling it; the fill must reach at least two feet above the regional or base flood elevation and be contiguous to land already outside the floodplain, and the map itself must be formally amended under § 275-65 H before the removal is effective.