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

3.2 ft MLLW Next: Low Tide (0.7 ft) at 8:33 PM

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

Water Temp

68.9°F

The Battery

Surge Anomaly

+1.70 ft

vs Astronomical

Marine Wind

20 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: 4.8 kts

In 8649h 4m Slack at 1:47 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 1:47 AMSlack 8:12 AMSlack 2:11 PMSlack 8:49 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 AM4.0ft (High)0.9ft (Low)4.8ft (High)0.7ft (Low)

Promenade Seawall Clearance

High Water (Near Lip)

High tide near seawall coping. Minor splash during boat wakes or gusty winds.

Est. Peak: 5.1 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

20270921

Normal Tide
High Tide 1:58 AM 4.0 ft
Low Tide 7:46 AM 0.9 ft
High Tide 2:18 PM 4.8 ft
Low Tide 8:33 PM 0.7 ft
Third Quarter

Wednesday

20270922

Normal Tide
High Tide 2:50 AM 3.9 ft
Low Tide 8:44 AM 1.0 ft
High Tide 3:11 PM 4.8 ft
Low Tide 9:31 PM 0.7 ft
Third Quarter

Thursday

20270923

Normal Tide
High Tide 3:47 AM 3.9 ft
Low Tide 9:44 AM 1.0 ft
High Tide 4:10 PM 4.7 ft
Low Tide 10:31 PM 0.6 ft
Third Quarter

Friday

20270924

Normal Tide
High Tide 4:50 AM 3.9 ft
Low Tide 10:46 AM 0.9 ft
High Tide 5:15 PM 4.8 ft
Low Tide 11:29 PM 0.5 ft
Third Quarter

Saturday

20270925

Normal Tide
High Tide 5:54 AM 4.2 ft
Low Tide 11:47 AM 0.7 ft
High Tide 6:16 PM 4.9 ft
Waning

Sunday

20270926

Normal Tide
Low Tide 12:24 AM 0.3 ft
High Tide 6:52 AM 4.5 ft
Low Tide 12:45 PM 0.5 ft
High Tide 7:13 PM 5.1 ft
Waning

Monday

20270927

Normal Tide
Low Tide 1:18 AM 0.1 ft
High Tide 7:44 AM 4.9 ft
Low Tide 1:42 PM 0.3 ft
High Tide 8:05 PM 5.2 ft
Waning