New Orleans requires stormwater management plans for most new development under the Comprehensive Zoning Ordinance (CZO) Article 23. The city mandates green infrastructure and on-site retention to reduce strain on the drainage system and mitigate flooding. The Sewerage & Water Board of New Orleans manages the city's drainage infrastructure.
CZO Article 23 requires a landscape and stormwater management plan for most new development prior to receiving a permit. The plan must demonstrate on-site stormwater retention using green infrastructure such as bioswales, rain gardens, permeable pavement, and detention basins. The city's stormwater management requirements aim to reduce the urban heat island effect, decrease flooding, and protect public health. Single-family residential projects under certain thresholds may be exempt.
Failure to submit or comply with an approved stormwater management plan may result in permit denial, stop-work orders, and fines. The Department of Safety and Permits enforces compliance.
New Orleans, LA
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See how New Orleans's stormwater management rules stack up against other locations.
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