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

0.1 ft MLLW Next: High Tide (4.3 ft) at 11:52 AM

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

Water Temp

62.4°F

The Battery

Surge Anomaly

+1.55 ft

vs Astronomical

Marine Wind

13 mph

10° · 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 136584h 1m Slack at 6:20 AM

Ebb Current (215° SW toward New York Harbor)
24-Hour Velocity Curve · Hell Gate
+ Flood (NE) − Ebb (SW)
-4-20+2+4Slack 0 kts12 AM4 AM8 AM12 PM4 PM8 PM12 AMSlack 6:20 AMSlack 12:11 PMSlack 6:34 PM

Watercraft Transit · Hell Gate

Optimal Slack Window

Minimal current velocity (< 1.0 kt). Safe transit window for human-powered craft passing through from off-island launches (such as Hallets Cove in Astoria). Note: Roosevelt Island has no public boat ramps, put-ins, or landing docks.

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 AM-0.3ft (Low)4.3ft (High)0.3ft (Low)

Promenade Seawall Clearance

Promenade Splashover Risk

Water level approaching or overtopping low promenade seawalls near Southpoint Park and Lighthouse Point.

Est. Peak: 6.9 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

20420521

Normal Tide
Low Tide 5:34 AM -0.3 ft
High Tide 11:52 AM 4.3 ft
Low Tide 5:40 PM 0.3 ft
Waxing

Thursday

20420522

Spring Tide
High Tide 12:08 AM 5.3 ft
Low Tide 6:22 AM -0.1 ft
High Tide 12:45 PM 4.2 ft
Low Tide 6:29 PM 0.6 ft
Waxing

Friday

20420523

Normal Tide
High Tide 1:00 AM 5.1 ft
Low Tide 7:12 AM 0.1 ft
High Tide 1:38 PM 4.1 ft
Low Tide 7:23 PM 0.8 ft
Waxing

Saturday

20420524

Normal Tide
High Tide 1:52 AM 4.8 ft
Low Tide 8:05 AM 0.3 ft
High Tide 2:29 PM 4.1 ft
Low Tide 8:20 PM 1.0 ft
Waxing

Sunday

20420525

Normal Tide
High Tide 2:42 AM 4.6 ft
Low Tide 8:59 AM 0.5 ft
High Tide 3:21 PM 4.0 ft
Low Tide 9:18 PM 1.2 ft
First Quarter

Monday

20420526

Neap Tide
High Tide 3:34 AM 4.3 ft
Low Tide 9:51 AM 0.6 ft
High Tide 4:15 PM 4.1 ft
Low Tide 10:16 PM 1.2 ft
First Quarter

Tuesday

20420527

Neap Tide
High Tide 4:30 AM 4.1 ft
Low Tide 10:43 AM 0.6 ft
High Tide 5:12 PM 4.1 ft
Low Tide 11:12 PM 1.1 ft
First Quarter