Port Jefferson Boat Ramp
Boat ramp · on Old Mill Creek · near Port Jefferson · New York
Status not reported No closure has been posted for this launch, but its agency does not publish open or closed status. Check with the managing agency before you tow.
At the launch
- Type
- Boat ramp
- Docks
- 1
- Ramp surface
- Multi-lane concrete ramp
- Car parking
- 90
- Restrooms
- Yes
- Tidal
- Yes
- Managed by
- Local government
- Website
- dec.ny.gov
- Coordinates
- 40.94601, -73.07260
Channel depths in feet from the Army Corps' surveys (New York District; the one nearest this launch is of August 18, 2026). Not for navigation.
Conditions
- Weather forecast for this launch · National Weather Service
- Tide predictions at Port Jefferson · NOAA, 0.4 mi away
Marine advisories
Advisories in effect load here; without them, see the NWS zone forecast below.
National Weather Service marine zone ANZ335, Long Island Sound West of New Haven CT/Port Jefferson NY. Zone forecast: winds, seas, warnings.
Tides
Predicted highs and lows at NOAA's Port Jefferson station, 0.4 mi from this launch, in local time above MLLW. Predictions, not observations: wind and weather move the real tide. Full predictions at NOAA.
| Mon Oct 19 | Low 12:13 am 1.2 ft · High 6:23 am 5.7 ft · Low 12:34 pm 1.6 ft · High 6:41 pm 6.0 ft |
|---|---|
| Tue Oct 20 | Low 1:08 am 1.2 ft · High 7:20 am 5.9 ft · Low 1:31 pm 1.4 ft · High 7:38 pm 6.1 ft |
| Wed Oct 21 | Low 1:59 am 1.0 ft · High 8:11 am 6.2 ft · Low 2:25 pm 1.1 ft · High 8:31 pm 6.3 ft |
| Thu Oct 22 | Low 2:47 am 0.7 ft · High 8:58 am 6.6 ft · Low 3:15 pm 0.7 ft · High 9:20 pm 6.5 ft |
| Fri Oct 23 | Low 3:31 am 0.5 ft · High 9:42 am 7.1 ft · Low 4:03 pm 0.3 ft · High 10:06 pm 6.7 ft |
| Sat Oct 24 | Low 4:14 am 0.3 ft · High 10:24 am 7.5 ft · Low 4:48 pm -0.1 ft · High 10:51 pm 6.9 ft |
| Sun Oct 25 | Low 4:57 am 0.1 ft · High 11:06 am 7.8 ft · Low 5:33 pm -0.3 ft · High 11:35 pm 7.0 ft |
Channel survey
The Army Corps surveys the channels it maintains and posts every survey.
- Port Jefferson Harbor · 0.2 mi from this launch
Condition survey of August 18, 2026 by the New York District. Least depth in the channel: 9.2 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.
On Old Mill Creek
River in New York. All launches on Old Mill Creek.
Community
Where people who use Old Mill Creek talk about it.
Nearby launches
- Village of Poquott Boat Ramp · 0.7 mi · Port Jefferson Harbor
- Shore Road Beach · 1.6 mi · Setauket Harbor
- Crystal Hollow Road Beach · 1.9 mi · Mount Sinai Harbor
- Cedar Beach Town Nature Preserve · 2.5 mi · Long Island Sound
- Cedar Beach · 2.7 mi · Mount Sinai Harbor
- Stony Brook Boat Ramp · 4.4 mi · Smithtown Bay
Sources
- New York State DEC Boat Launch Sites record -73.07261,40.94598 · NYS DEC terms: credit DEC
- NYS DEC Marine Boat Launches, Nassau and Suffolk counties (municipal ramps) record 10 · NYS DEC open data, license unspecified; credit NYSDEC Division of Marine Resources
- NYS DEC Long Island Sound Public Access Site List 2025 (boat and kayak launch sites) record b3dafb49-b885-4032-93e2-37e68dfd554f · NYS DEC data, no terms stated on the ArcGIS item; credit NYSDEC and the Long Island Sound Partnership
- OpenStreetMap w1044807320 © OpenStreetMap contributors, ODbL
- OpenStreetMap n2832865966 © OpenStreetMap contributors, ODbL
- OpenStreetMap w949333622 © OpenStreetMap contributors, ODbL
Why it is listed as public: listed by New York State DEC Boat Launch Sites and NYS DEC Marine Boat Launches, Nassau and Suffolk counties (municipal ramps) and NYS DEC Long Island Sound Public Access Site List 2025 (boat and kayak launch sites) (NYS DEC Marine Boat Launches, Nassau and Suffolk counties (municipal ramps) says public_restricted; the state agency's listing decides). Something wrong, or is this launch private? Send a correction; it goes to a person.