New York /
Great South Bay
Bay in New York · 55,452 acres · near Babylon, Bay Shore, Bellport, East Islip
Great South Bay has 11 boat ramps listed as public.
Channel depths in feet from the Army Corps' surveys of January 15, 2020 to June 4, 2025. Not for navigation.
Channel surveys
- Great South Bay - Main
Condition survey of June 4, 2025 by the New York District. Least depth in the channel: 1.3 ft; project depth 10 ft. Survey sheet (PDF) - Sumpwampus Inlet
Condition survey of January 15, 2020 by the New York District. Least depth in the channel: 0.3 ft; project depth 5 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
- Babylon Village Boat Ramp · Boat ramp · near Babylon Residents/permit only
- Bay Shore Marina · Boat ramp · near Bay Shore Residents/permit only
- Bellport Village Marina Boat Ramp · Boat ramp · near Bellport Residents/permit only
- Captree State Park · Boat ramp · near West Islip
- Captree State Park · Boat ramp · near Islip
- East Islip Marina · Boat ramp · near East Islip
- Heckscher State Park · Boat ramp · near East Islip
- Pine Neck Boat Ramp · Boat ramp · near East Patchogue
- Smith Point County Marina · Boat ramp · near Mastic Beach
- Venetian Shores · Boat ramp · near Lindenhurst
- West Islip Marina and Beach · Boat ramp · near West Islip Residents/permit only
Community
Where people who fish, boat and paddle Great South Bay talk about it. Lake associations, clubs and local groups will be added as we find them.