Hackensack River at New Milford

Highest listed crest 12.36 ftFlood stage 6.0 ft10 crests since 1977

The Hackensack River at New Milford crested at major flood stage 2 times among the 10 crests the National Weather Service lists from 1977 to 2011. The highest, 12.36 ft on April 16, 2007, was major flooding, 6.36 feet above flood stage. 1 other gauge on the Hackensack River crested above flood stage within a week of it.

The gauge

Highest listed crest: 12.36 ft; April 16, 2007; 11,600 cubic feet per second
Flood stage: 6.0 ft; Major flooding from 10.0 ft
Crests at major: 2; 49th of 125 gauges in New Jersey
Most recent flood crest: March 11, 2011; 6.33 ft, minor flooding
Location: Bergen County; Near New Milford (1.0 mi), River Edge (1.6 mi), Dumont (1.8 mi)
Identifiers: NWS NMLN4; USGS 01378500

Flood stages

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

Flood categories, Hackensack River at New Milford

Action stage	5.5	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	6.0	7	Mar 11, 2011	Minimal or no property damage, but possibly some public threat
Moderate flood stage	8.0	1	May 17, 1989	Some inundation of structures and roads near the stream
Major flood stage	10.0	2	Apr 16, 2007	Extensive inundation of structures and roads

Every listed crest

10 crests from 1977 to 2011. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

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, Hackensack River at New Milford

1	Apr 16, 2007	12.36	+6.36	Major	11,600
2	Sep 16, 1999	11.45	+5.45	Major	—
3	May 17, 1989	8.23	+2.23	Moderate	4,630
4	Apr 5, 1984	7.96	+1.96	Minor	4,500
5	Nov 9, 1977	7.95	+1.95	Minor	4,500
6	Mar 14, 2010	7.68	+1.68	Minor	4,280
7	Mar 7, 2011	7.35	+1.35	Minor	—
8	Apr 5, 1987	6.76	+0.76	Minor	3,840
9	Mar 11, 2011	6.33	+0.33	Minor	—
10	May 17, 1990	6.01	+0.01	Minor	3,370

The worst floods along the Hackensack River

For this gauge's highest crests, the other gauges on the Hackensack River that crested above flood stage within a week.

April 16, 2007: 12.36 ft here, major flooding

RivervaleNJ · Apr 16, 2007 · 12.19 ft · Major

Gauges on the Hackensack River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Hackensack River

Rivervale	NJ	5.5	12.26 ft, Aug 28, 2011	3
New Milford this gauge	NJ	6.0	12.36 ft, Apr 16, 2007	2

Other gauges in Bergen County

Flood gauges in Bergen County

Rivervale	5.5	12.26 ft, Aug 28, 2011	3
Ho-Ho-Kus	3.0	7.32 ft, Sep 16, 1999	2
Westwood	5.0	11.40 ft, Sep 16, 1999	1
Mahwah	8.0	15.78 ft, Aug 28, 2011	3
Lodi	5.5	13.94 ft, Sep 16, 1999	16
Ridgewood	5.0	11.42 ft, Aug 28, 2011	1
Upper Saddle River	4.5	5.64 ft, Sep 16, 1999	1

Bergen County: every hazard · River floods across the country · New Jersey

NOAA National Water Prediction Service, gauge NMLN4, 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.