33 CFR § 401.50 - Anchorage areas.
Except in an emergency, or unless authorized to do so by the traffic controller, no vessel shall drop anchor in any part of the Seaway except in the following designated anchorage areas:
(a) Point Fortier (Lake St. Louis).
(b) Melocheville (Beauharnois Canal).
(c) St. Zotique, Dickerson Island and Stonehouse Point (Lake St. Francis).
(d) Wilson Hill Island and Morrisburg (Lake St. Lawrence).
(e) Prescott, Union Park and Carleton Island (St. Lawrence River).
(f) Off Tibbetts point (Lake Ontario).
(g) Off Port Weller (Lake Ontario).
(h) Off Port Colborne (Lake Erie).