Jamaica Bay at Inwood (IN MLLW)

Highest listed crest 11.65 ftFlood stage 7.8 ft1 crests since 2012

The Jamaica Bay at Inwood (IN MLLW) crested at major flood stage 1 time among the 1 crests the National Weather Service lists from 2012 to 2012. The highest, 11.65 ft on October 29, 2012, was major flooding, 3.85 feet above flood stage.

The gauge

Highest listed crest: 11.65 ft; October 29, 2012
Flood stage: 7.8 ft; Major flooding from 9.3 ft
Crests at major: 1; 98th of 160 gauges in New York
Most recent flood crest: October 29, 2012; 11.65 ft, major flooding
Location: Nassau County; Near Valley Stream (4.3 mi), East Rockaway (5.1 mi), Lynbrook (5.2 mi)
Identifiers: NWS IWDN6; USGS 01311850

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Jamaica Bay at Inwood (IN MLLW)

Action stage	7.2	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	7.8	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	8.5	0	—	Some inundation of structures and roads near the stream
Major flood stage	9.3	1	Oct 29, 2012	Extensive inundation of structures and roads

Every listed crest

1 crests from 2012 to 2012. Filled: at or above flood stage. Hover a crest for its date and stage.

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Jamaica Bay at Inwood (IN MLLW)

1	Oct 29, 2012	11.65	+3.85	Major	—

Other gauges in Nassau County

Flood gauges in Nassau County

Hudson Bay at Freeport (IN MLLW)	6.0	10.12 ft, Oct 29, 2012	2
Little Neck Bay at Kings Point (IN MLLW)	10.0	16.75 ft, Sep 21, 1938	6
Sands Point (IN MLLW)	10.0	16.75 ft, Sep 21, 1938	10

Nassau County: every hazard · River floods across the country · New York

NOAA National Water Prediction Service, gauge IWDN6, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.