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Planning staff outline critical‑areas update and propose compromise wetland buffers
Summary
Planning staff told council that updated state science would set minimum wetland/stream buffers at 100 feet, with site-specific tree-height models producing larger widths; the city presented a compromise buffer that staff and the planning commission said balances state guidance and streamlined permitting.
Planning staff opened the meeting with a detailed presentation of proposed critical‑areas code updates focused on stream and wetland buffers. Staff explained that recent Fish & Wildlife and Department of Natural Resources guidance recommends a 100‑foot minimum buffer in many cases and that a site potential tree‑height model could produce widths of up to 231 feet on some properties.
The presenter said staff used an analysis and a gap analysis (provided in the packet) to compare options and that the planning commission recommended a compromise buffer that increases protection compared with the city’s current code but is less extensive than the state tree‑height model. As the presenter summarized, "a minimum, you need a 100 feet of buffer from any wetland..." The presentation included GIS maps showing coverage increases under different models and an estimate that the proposed approach would result in approximately 82% parcel coverage by the adopted buffer compared with much higher coverage under the full tree‑height predictive model.
Council asked practical questions about nonconforming properties and rebuilding after damage; staff said the objective is no net loss of function and that already‑disturbed, landscaped areas could generally remain as maintained rather than be required to convert back to a natural state. The planning commission and staff noted additional work on culturally significant trees and a separate climate element outreach process.
Next steps: The critical‑areas update will remain on the council’s work plan; staff indicated additional outreach and verification steps (site-level verification of DNR data) before formal adoption and subsequent ordinance readings.
