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Hutchinson staff report 25–35% reduction in proposed floodplain after local review of state maps
Summary
Public Works staff told the Hutchinson City Council that work with state mappers and consultants reduced the initial mapped floodplain by approximately 25–35 percent after locating larger drainage pipes and historic data; staff will prioritize mitigation projects where floodplain designations remain.
Chief Weibel, speaking for the city's public-works team, updated the council on the city's review of proposed floodplain maps prepared by state mapping partners and two consulting firms. He said staff identified larger-diameter piping and historic data that the initial mapers did not include, which yielded between a 25 percent and 35 percent reduction in the mapped area compared with the original draft.
Weibel said the city is not "out of the woods"—large areas remain in the floodplain—but that the revised estimate gives staff the ability to focus mitigation efforts where they will have the greatest effect. He said the city will continue to work with consultants, complete additional in‑city field work before the maps go final, and prioritize ponds, ditches and upsizing where maps still indicate flood risk.
Staff reported one completed pond project and several designs ready to start; additional work will be prioritized when final maps are received next week. Weibel also said the stormwater fund will be used for projects and, if a proposed sales tax measure passes, those proceeds could also be used for flood‑mitigation work.
Council members thanked staff for detailed work and urged staff to communicate progress to the public, including potential cost and flood-insurance impacts for residents. No formal action was taken during the update; it was an informational briefing and council asked staff to continue the analysis and return with recommended projects tied to the final flood maps.
What happens next: staff will review the final maps when issued, finalize project prioritization, and present implementation and funding recommendations to council.
