New Haven, CT Environmental Rules: Erosion Control (2026)
Key Facts
- Governing section
- Zoning Ordinance § 60
- Plan trigger
- 0.5 acre disturbed or paved
- Also triggers
- 3+ new residential units
- Required content
- pre/post runoff calculations
Summary
New Haven requires a stormwater management plan for zoning applications involving a half-acre or more of land disturbance, a half-acre of impervious cover, or three or more new residential units.
(c)Application requirements. A stormwater management plan shall be included as a part of any application for zoning approval (including but not limited to special permit and special exception), coastal site plan review, or an inland wetlands permit where:(1)The application pertains to a development or construction disturbing one-half or more acres of total land area on a site; or(2)The application pertains to any site with one-half acre or more of existing and/or proposed impervious cover; or(3)The application proposes new residential development of three or more units.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 31 | Zoning: Supplement 32).
Full Breakdown
New Haven Zoning Ordinance Section 60 requires a stormwater management plan as part of any zoning approval, special permit, coastal site plan review, or inland wetlands permit application where the project disturbs a half-acre or more of land, adds a half-acre or more of impervious cover, proposes three or more new residential units, or expands commercial/industrial impervious surface by more than 500 square feet. The plan must show pre- and post-development runoff rates, soil characteristics, and stormwater control measures, and the reviewing commission can refer it to the state DEP for a discharge-permit determination.
Violations & Fines
Applying for zoning or coastal-site-plan approval on a covered project without a stormwater management plan under Section 60 means the application is incomplete and cannot be approved.
Frequently Asked Questions
When does a New Haven project need a stormwater management plan?
What must the plan show?
Sources & Official References
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