The Interstate Environmental District (hereinafter referred to as the District) embraces all of the coastal, estuarial and tidal waters within or covering portions of the signatory States as follows:

  • (a) In Connecticut, Long Island Sound and estuaries and tidal waters thereof between the easterly side of New Haven Harbor at Morgan Point and the Connecticut-New York State boundary, and the Housatonic River up to the northerly boundary lines of the towns of Stratford and Milford.
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  • (b) In New York, all of the tidal waters of Greater New York City; including Kill Van Kull and Arthur Kill, Long Island Sound and the estuaries and tidal waters thereof between the New York City line and the New York-Connecticut State boundary and between the New York City line and the easterly side of Port Jefferson Harbor; the Atlantic Ocean and the estuaries and tidal waters thereof between the New York City line and the easterly side of Fire Island inlet; and the Hudson River and estuaries and tidal waters thereof between the New York and New Jersey State boundary and the northerly line of Rockland County on the westerly side and between the northerly line of New York City and the northerly line of Westchester County on the easterly side of the River.
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  • (c) In New Jersey, the Hudson River and New York Upper Bay and estuaries and tidal waters thereof between the New York-New Jersey boundary and Constable Point on Constable Hook, the Kill Van Kull and Arthur Kill to the mouths of the rivers entering into the Kills; Newark Bay and the estuaries thereof up to the mouth of the Passaic River; and up to the mouth of the Hackensack River; Raritan Bay together with the Raritan River up to the Victory Bridge on said River between Perth Amboy and South Amboy; together with the Cheesequake Creek up to the New York and Long Branch Railroad Bridge on said Creek at Morgan; together with the Matawan Creek up to the New York and Long Branch Railroad Bridge on said Creek at Matawan; Sandy Hook Bay; together with the Shrewsbury River up to the passenger railroad bridge between Navesink Light and Highland Beach on said River.

While the above described Interstate Environmental District forms the basis of applicability of IEC’s Water Quality Regulations, IEC has the capability to assist with priority water quality projects throughout its member states, where resources and need exist.

IEC surface water classifications map