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Connecticut Statewide Rule

Connecticut Coastal Area Management Act Statewide Rules

Heavy RestrictionsApplies statewide across Connecticut (2026)

Key Facts

Statute
Sec. 22a-90 to 22a-112
Permit agency
DEEP OLISP
Trigger
Within coastal boundary
Tidal works penalty
Up to $10,000 daily
Last verified: August 20, 2026Source: State of Connecticut

Summary

The Connecticut Coastal Management Act (Sec. 22a-90 et seq.) requires consistency review of all development within the coastal boundary. DEEP and municipalities enforce uniform statewide standards for shoreline construction.

Sec. 22a-359. (Formerly Sec. 25-7b). Regulation of dredging, erection of structures and placement of fill in tidal, coastal or navigable waters. Sunken or grounded vessels. Definitions. (a) The Commissioner of Energy and Environmental Protection shall regulate dredging and the erection of structures and the placement of fill, and work incidental thereto, in the tidal, coastal or navigable waters of the state waterward of the coastal jurisdiction line. Any decisions made by the commissioner pursuant to this section shall be made with due regard for indigenous aquatic life, fish and wildlife, the prevention or alleviation of shore erosion and coastal flooding, the use and development of adjoining uplands, the improvement of coastal and inland navigation for all vessels, including small craft for recreational purposes, the use and development of adjacent lands and properties and the interests of the state, including pollution control, water quality, recreational use of public water and management of coastal resources, with proper regard for the rights and interests of all persons concerned. (b) After consultation with the Connecticut Port Authority, the Commissioner of Energy and Environmental Protection may consider any sunken or grounded vessel, scow, lighter or similar structure lying within the tidal, coastal or navigable waters of the state to be an encroachment subject to the provisions of this section and sections 22a-360 to 22a-363 , inclusive.

Source: State of ConnecticutView official code

Full Breakdown

Conn. Gen. Stat. Sec. 22a-90 through 22a-112 establish the Connecticut Coastal Management Act, which governs all development within the legally defined coastal boundary along Long Island Sound and tidal waterways. Site plans within the coastal boundary undergo coastal site plan review evaluating impacts on coastal resources, public access, and shoreline flood and erosion. Structures waterward of the high tide line require a DEEP Office of Long Island Sound Programs permit under Sec. 22a-359. Municipalities incorporate the Act into local zoning, but cannot waive consistency review or DEEP jurisdiction.

Violations & Penalties

Unauthorized coastal work may incur civil penalties up to $10,000 per day plus mandatory removal and restoration. Tidal wetlands violations carry separate penalties under Sec. 22a-32.

Frequently Asked Questions

Do I need a state permit to build a dock or seawall?
Yes. Any structure waterward of the coastal jurisdiction line requires a DEEP Structures, Dredging and Fill permit. Local approvals alone are insufficient for work in tidal waters.
Can my town approve coastal projects DEEP would deny?
No. Municipal approvals cannot override DEEP jurisdiction over tidal waters and wetlands. Coastal site plan review must apply state consistency standards alongside any required DEEP permit.

Sources

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