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Molly Ann Brook at N. Haledon

Highest listed crest 10.93 ftFlood stage 6.0 ft14 crests since 1979

The Molly Ann Brook at N. Haledon crested at major flood stage 2 times among the 14 crests the National Weather Service lists from 1979 to 2011. The highest, 10.93 ft on May 16, 1990, was major flooding, 4.93 feet above flood stage.

The gauge

Highest listed crest
10.93 ft
May 16, 1990; 970 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
7.06 ft, minor flooding
Location
Passaic County
Near Hawthorne (1.4 mi), Paterson (2.7 mi), Glen Rock (3.1 mi)

Flood stages

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

Flood categories, Molly Ann Brook at N. Haledon
Action stage5.81Dec 2, 1996The level at which the NWS or its partners begin to take action
Flood stage (minor)6.06Mar 11, 2011Minimal or no property damage, but possibly some public threat
Moderate flood stage8.05Jul 22, 2006Some inundation of structures and roads near the stream
Major flood stage10.02Sep 16, 1999Extensive inundation of structures and roads

Every listed crest

14 crests from 1979 to 2011. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Molly Ann Brook at N. Haledon, 1979 to 2011 4681012ft Flood stage 6.0 ftMajor 10.0 ft Sep 6, 1979: 8.66 ft, moderate flooding; 805 cubic feet per secondApr 28, 1980: 7.62 ft, minor flooding; 675 cubic feet per secondMay 29, 1984: 8.87 ft, moderate flooding; 823 cubic feet per secondMay 16, 1990: 10.93 ft, major flooding; 970 cubic feet per secondSep 3, 1992: 8.12 ft, moderate flooding; 740 cubic feet per secondJul 8, 1996: 8.02 ft, moderate flooding; 720 cubic feet per secondDec 2, 1996: 5.87 ft, action stage; 360 cubic feet per secondSep 16, 1999: 10.74 ft, major flooding; 964 cubic feet per secondAug 11, 2000: 6.93 ft, minor flooding; 569 cubic feet per secondNov 28, 2004: 7.01 ft, minor flooding; 547 cubic feet per secondJul 22, 2006: 9.13 ft, moderate flooding; 843 cubic feet per secondApr 15, 2007: 6.88 ft, minor flooding; 667 cubic feet per secondSep 6, 2008: 6.66 ft, minor flooding; 617 cubic feet per secondMar 11, 2011: 7.06 ft, minor flooding Highest, 10.93 ft, May 16, 1990 1980199020002010

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Molly Ann Brook at N. Haledon 1970s: 1 1980s: 2 1990s: 4 2000s: 5 5 2010s: 1 1970s1980s1990s2000s2010s
  1. 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.
  2. 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, Molly Ann Brook at N. Haledon
1May 16, 199010.93+4.93Major970
2Sep 16, 199910.74+4.74Major964
3Jul 22, 20069.13+3.13Moderate843
4May 29, 19848.87+2.87Moderate823
5Sep 6, 19798.66+2.66Moderate805
6Sep 3, 19928.12+2.12Moderate740
7Jul 8, 19968.02+2.02Moderate720
8Apr 28, 19807.62+1.62Minor675
9Mar 11, 20117.06+1.06Minor—
10Nov 28, 20047.01+1.01Minor547
11Aug 11, 20006.93+0.93Minor569
12Apr 15, 20076.88+0.88Minor667
13Sep 6, 20086.66+0.66Minor617
14Dec 2, 19965.87−0.13Action360

Other gauges in Passaic County

Flood gauges in Passaic County
Beatties Dam11.314.10 ft, Aug 30, 20110
Clifton (Dundee Dam)4.58.40 ft, Oct 10, 19031
Little Falls7.014.19 ft, Aug 30, 201122
Singac8.512.44 ft, Dec 20, 20231
Macopin5.57.75 ft, Mar 12, 19362
Riverdale8.013.60 ft, Apr 5, 19842
Pompton Plains16.025.24 ft, Aug 29, 201116
Pompton Lakes11.522.62 ft, Aug 29, 20119
Wanaque6.010.82 ft, Apr 5, 19842

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

NOAA National Water Prediction Service, gauge MOLN4, 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.