New York /
Port Jefferson Harbor
Bay in New York · 995 acres · near Poquott
Port Jefferson Harbor has 1 boat ramp listed as public.
Channel depths in feet from the Army Corps' surveys of August 18, 2026. Not for navigation.
Channel surveys
- Port Jefferson Harbor
Condition survey of August 18, 2026 by the New York District. Least depth in the channel: 24.6 ft; project depth 26 ft. Survey sheet (PDF)
US Army Corps of Engineers hydrographic surveys, from eHydro. A survey shows the bottom on the day it was made; channels shoal after high water and change with dredging. Not for navigation.
Launches
- Village of Poquott Boat Ramp · Boat ramp · near Poquott Residents/permit only
Community
Where people who fish, boat and paddle Port Jefferson Harbor talk about it. Lake associations, clubs and local groups will be added as we find them.