Zoning › State preemptions › Louisiana

Mississippi River Industrial Corridor + Atchafalaya Basin — Informational Overlay (LA)

Tracked preemption from the Louisiana overlay bundle.

Overview

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Effective
2026-05-18
Sunset
—
Authority
state
Scope
state:LA
Other Louisiana preemptions
Coastal Protection and Restoration Authority (CPRA) — Coastal Master PlanLouisiana Voluntary Remediation Program (VRP) / Brownfields — La. R.S. 30:2271 et seq.Tax Increment Financing & Economic Development Districts — La. R.S. 33:9038 et seq.Louisiana State and Local Coastal Resources Management Act (SLCRMA) — Coastal Use PermitsLouisiana Constitutional Home Rule — Art. VI §§4–5Levee Districts and Levee Servitudes — La. Const. Art. VI §38 + La. R.S. Title 38Louisiana Historic Preservation — National Register Districts + La. R.S. 25:731 et seq.Industrial Tax Exemption Program (ITEP) — La. Const. Art. VII §21(F)

Trigger predicate

When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.

OR
  • city.in_mississippi_river_industrial_corridor == True
  • city.is_in_atchafalaya_basin == True

Preempted fields

0 fields on the base district schema are rewritten when the trigger fires.

Citation

Authority source
Atchafalaya Basin Program — La. R.S. 30:2502; Louisiana Coastal Master Plan (2023); USACE Atchafalaya Basin Floodway System Authorization (1928 Flood Control Act, as amended); EPA Region 6 environmental justice analyses for the Mississippi River Industrial Corridor
§ La. R.S. 30:2501–2509 (Atchafalaya Basin Program); CPRA Master Plan (Basin reach); EPA EJScreen industrial corridor (informational)
https://legis.la.gov/legis/Laws_Toc.aspx?folder=95&title=30

Research notes

Tracked as an informational, non-preempting overlay so downstream city/parish profiles can carry the corridor / basin flag without misrepresenting a hard state preemption that does not exist. (1) The Mississippi River Industrial Corridor ('Cancer Alley' to advocacy groups, 'River Region' to industry) between Baton Rouge and New Orleans is governed by parish-level zoning + ITEP siting decisions + LDEQ/LDENR permits — not by a state corridor-overlay statute. (2) The Atchafalaya Basin is regulated by the federal Atchafalaya Basin Floodway System (USACE), state Scenic Rivers, SLCRMA (in coastal portions), CPRA Master Plan projects, and the Atchafalaya Basin Program at La. R.S. 30:2502 — but the program is largely planning/coordination, not a per-parcel preemption. Federal conflict check enabled because USACE flowage easements and the 1928 Flood Control Act dominate basin land use. Bayou Region (Lafourche/Terrebonne) and parade-route / French Quarter alcohol ordinances cited in the task brief operate at the local-ordinance level under New Orleans home rule and are NOT state-level overlays — they are intentionally not represented as separate state-scope entries.