Wetland Delineation Regulation

Current understanding

To be populated as evidence accumulates.

Evidence log

• 2026-06-04 — Natural resources: wetlands; definition of wetland; update. Amends secs. 30301, 30307 & 30308 of 1994 PA 451 (MCL 324.30301 et seq.).: HB5536 amends secs. 30301, 30307 & 30308 of 1994 PA 451 to update the statutory definition of ‘wetland’ — a companion measure to the delineation changes in HB5082, extending the coordinated legislative rework of Michigan’s Part 303 wetlands framework to the foundational definitional provisions. (novelty: 2)
• 2026-06-04 — Natural resources: wetlands; replacement or relocation of wetlands within a development project; allow. Amends sec. 30311d of 1994 PA 451 (MCL 324.30311d).: cross-connection with wetlands-replacement-relocation-hb5501: HB5501 (sec. 30311d, on-site wetlands replacement/relocation) and HB5082 (sec. 30321, delineation) are parallel amendments to Part 303 of 1994 PA 451, suggesting a coordinated legislative rework of Michigan’s wetlands regulatory framework spanning delineation, permitting, and mitigation. (novelty: 2)
• 2026-06-24 — Natural resources: wetlands; regulation of wetlands; modify. Amend sec. 30305 of 1994 PA 451 (MCL 324.30305).: Companion effort HB5502 amends a different section (MCL 324.30305) of the same 1994 PA 451 wetlands framework, indicating a broader legislative package revisiting Michigan wetlands regulation alongside the delineation changes in HB5082. (novelty: 2)
• 2026-06-24 — Natural resources: wetlands; wetland delineation regulations; provide for. Amends sec. 30321 of 1994 PA 451 (MCL 324.30321).: HB5082 (103rd Legislature) passed a chamber, advancing amendments to wetland delineation rules under MCL 324.30321 of the Natural Resources and Environmental Protection Act (1994 PA 451). (novelty: 2)

Open questions

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