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

1.3 ft MLLW Next: High Tide (4.8 ft) at 6:19 AM

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

Water Temp

68.2°F

The Battery

Surge Anomaly

+0.10 ft

vs Astronomical

Marine Wind

10 mph

350° · 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: 4.6 kts

In 139857h 9m Slack at 10:52 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 10:52 AMSlack 4:57 PMSlack 11:16 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 AM0.4ft (Low)4.8ft (High)0.2ft (Low)4.5ft (High)

Promenade Seawall Clearance

Dry Seawall

Water levels safely below riprap seawall lip across island promenades.

Est. Peak: 2.6 ft MLLW Seawall: +10.7 ft

Shoreline Fishing

Fair Movement

Moderate current moving bait along shoreline riprap and drop-offs.

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

20421005

Normal Tide
Low Tide 1:09 AM 0.4 ft
High Tide 6:19 AM 4.8 ft
Low Tide 12:46 PM 0.2 ft
High Tide 6:42 PM 4.5 ft
Third Quarter

Monday

20421006

Normal Tide
Low Tide 1:60 AM 0.4 ft
High Tide 7:10 AM 4.8 ft
Low Tide 1:37 PM 0.2 ft
High Tide 7:33 PM 4.5 ft
Third Quarter

Tuesday

20421007

Normal Tide
Low Tide 2:50 AM 0.4 ft
High Tide 8:00 AM 4.8 ft
Low Tide 2:27 PM 0.2 ft
High Tide 8:23 PM 4.5 ft
Third Quarter

Wednesday

20421008

Normal Tide
Low Tide 3:41 AM 0.4 ft
High Tide 8:51 AM 4.8 ft
Low Tide 3:18 PM 0.2 ft
High Tide 9:14 PM 4.5 ft
Third Quarter

Thursday

20421009

Normal Tide
Low Tide 4:31 AM 0.4 ft
High Tide 9:41 AM 4.8 ft
Low Tide 4:08 PM 0.2 ft
High Tide 10:04 PM 4.5 ft
Waning

Friday

20421010

Normal Tide
Low Tide 5:21 AM 0.4 ft
High Tide 10:32 AM 4.8 ft
Low Tide 4:59 PM 0.2 ft
High Tide 10:54 PM 4.5 ft
Waning

Saturday

20421011

Normal Tide
Low Tide 6:12 AM 0.4 ft
High Tide 11:22 AM 4.8 ft
Low Tide 5:49 PM 0.2 ft
High Tide 11:45 PM 4.5 ft
Waning