Marion County Land Development Regulation Commission adopts stormwater and floodplain code amendments

Jul 23, 2025

The Marion County Land Development Regulation Commission unanimously approved comprehensive revisions to the countyland development code addressing stormwater thresholds, flood-prone area rules, culvert and pipe sizing, grading and lane-spread criteria, with two edits added before final passage.

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The Marion County Land Development Regulation Commission unanimously approved a package of land development code amendments affecting stormwater, floodplain protection, grading and roadway drainage standards after an extended staff presentation and board discussion. The commission adopted the package with two modifications: clarifying the shallow flood-prone-area exemption threshold (1 foot deep and up to 2 acres) and adding language addressing lane-spread in turn lanes.

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