Roosevelt Island Tides mark Roosevelt Island Tides
Roosevelt Island Datum (Queensboro Bridge · Station 8518687) Falling Tide

4.2 ft MLLW Next: Low Tide (1.0 ft) at 9:15 PM

Astronomical water elevation benchmark for the East River strait. Seawalls across the island stand at approximately +10.7 ft MLLW.

Water Temp

61.9°F

The Battery

Surge Anomaly

+1.71 ft

vs Astronomical

Marine Wind

7 mph

20° · LGA Airport

East River Current Corridors

The East River strait splits around Roosevelt Island into two distinct channels, converging north at Hell Gate. Select a corridor to inspect real-time flow velocity, slack water timing, and watercraft navigation conditions.

Hell Gate · Off Mill Rock & Astoria
Peak Today: 3.6 kts

In 147251h 34m Slack at 3:25 AM

Flood Current (35° NE toward Long Island Sound)
24-Hour Velocity Curve · Hell Gate
+ Flood (NE) − Ebb (SW)
-4-20+2+4Slack 0 kts12 AM4 AM8 AM12 PM4 PM8 PM12 AMSlack 3:25 AMSlack 9:56 AMSlack 3:44 PMSlack 10:24 PM

Watercraft Transit · Hell Gate

Hazardous (Peak Rip)

Severe tidal rip exceeding 2.5 kts. Heavy turbulence, standing waves near Mill Rock, deep whirlpools, and fast commercial traffic. Watercraft transit through this corridor strictly not advised.

Safe Window: Slack ± 25m
No boat launches on island

Island Water Elevation & Astronomical Forecast

Astronomical water elevation predictions and weekly tides for Roosevelt Island measured at the Queensboro Bridge (Station 8518687) relative to Mean Lower Low Water (MLLW).

24-Hour Water Elevation (Feet MLLW) Station 8518687 · Queensboro Bridge
0ft2ft4ft6ftMHHW 5.1ft12 AM4 AM8 AM12 PM4 PM8 PM12 AM4.1ft (High)0.7ft (Low)4.6ft (High)1.0ft (Low)

Promenade Seawall Clearance

Dry Seawall

Water levels safely below riprap seawall lip across island promenades.

Est. Peak: 4.5 ft MLLW Seawall: +10.7 ft

Shoreline Fishing

Optimal Moving Water

Striped bass actively feeding in current rips near Southpoint Park and Lighthouse riprap.

Targets: Striped Bass, Bluefish (Southpoint & Lighthouse riprap)

7-Day High & Low Tide Forecast

Astronomical predictions for Queensboro Bridge (Station 8518687) relative to Mean Lower Low Water (MLLW). Select any day to inspect its 24-hour curve.

Today

20430811

Neap Tide
High Tide 2:36 AM 4.1 ft
Low Tide 8:37 AM 0.7 ft
High Tide 3:05 PM 4.6 ft
Low Tide 9:15 PM 1.0 ft
First Quarter

Wednesday

20430812

Neap Tide
High Tide 3:26 AM 3.8 ft
Low Tide 9:27 AM 0.9 ft
High Tide 3:55 PM 4.5 ft
Low Tide 10:10 PM 1.1 ft
First Quarter

Thursday

20430813

Neap Tide
High Tide 4:21 AM 3.6 ft
Low Tide 10:20 AM 1.1 ft
High Tide 4:51 PM 4.4 ft
Low Tide 11:05 PM 1.1 ft
First Quarter

Friday

20430814

Neap Tide
High Tide 5:21 AM 3.5 ft
Low Tide 11:13 AM 1.1 ft
High Tide 5:49 PM 4.4 ft
First Quarter

Saturday

20430815

Neap Tide
High Tide 6:21 AM 3.5 ft
Low Tide 12:05 PM 1.2 ft
High Tide 6:43 PM 4.5 ft
Waxing

Sunday

20430816

Neap Tide
Low Tide 12:51 AM 0.9 ft
High Tide 7:14 AM 3.6 ft
Low Tide 12:56 PM 1.1 ft
High Tide 7:32 PM 4.7 ft
Waxing

Monday

20430817

Neap Tide
Low Tide 1:42 AM 0.8 ft
High Tide 8:02 AM 3.8 ft
Low Tide 1:47 PM 1.1 ft
High Tide 8:18 PM 4.8 ft
Waxing