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

0.6 ft MLLW Next: High Tide (4.2 ft) at 5:37 PM

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

Water Temp

60.4°F

The Battery

Surge Anomaly

+0.56 ft

vs Astronomical

Marine Wind

9 mph

330° · 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: 3.7 kts

In 179369h 37m Slack at 5:29 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 5:29 AMSlack 12:21 PMSlack 5:55 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 AM4.4ft (High)0.4ft (Low)4.2ft (High)0.8ft (Low)

Promenade Seawall Clearance

Dry Seawall

Water levels safely below riprap seawall lip across island promenades.

Est. Peak: 1.9 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

20470418

Neap Tide
High Tide 4:55 AM 4.4 ft
Low Tide 11:09 AM 0.4 ft
High Tide 5:37 PM 4.2 ft
Low Tide 11:34 PM 0.8 ft
Third Quarter

Friday

20470419

Neap Tide
High Tide 5:57 AM 4.3 ft
Low Tide 12:02 PM 0.5 ft
High Tide 6:34 PM 4.3 ft
Waning

Saturday

20470420

Neap Tide
Low Tide 12:29 AM 0.8 ft
High Tide 6:53 AM 4.2 ft
Low Tide 12:51 PM 0.5 ft
High Tide 7:23 PM 4.5 ft
Waning

Sunday

20470421

Normal Tide
Low Tide 1:21 AM 0.7 ft
High Tide 7:41 AM 4.2 ft
Low Tide 1:37 PM 0.5 ft
High Tide 8:07 PM 4.6 ft
Waning

Monday

20470422

Normal Tide
Low Tide 2:11 AM 0.6 ft
High Tide 8:26 AM 4.2 ft
Low Tide 2:23 PM 0.5 ft
High Tide 8:48 PM 4.7 ft
Waning

Tuesday

20470423

Normal Tide
Low Tide 2:58 AM 0.5 ft
High Tide 9:09 AM 4.1 ft
Low Tide 3:07 PM 0.6 ft
High Tide 9:28 PM 4.8 ft
New Moon

Wednesday

20470424

Normal Tide
Low Tide 3:41 AM 0.4 ft
High Tide 9:51 AM 4.1 ft
Low Tide 3:48 PM 0.6 ft
High Tide 10:08 PM 4.8 ft
New Moon