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South Branch Raritan River at Stanton

Highest listed crest 15.22 ftFlood stage 8.0 ft48 crests since 1903

The South Branch Raritan River at Stanton crested at major flood stage 13 times among the 48 crests the National Weather Service lists from 1903 to 2024. The highest, 15.22 ft on August 19, 1955, was major flooding, 7.22 feet above flood stage.

The gauge

Highest listed crest
15.22 ft
August 19, 1955; 18,000 cubic feet per second
Flood stage
8.0 ft
Major flooding from 12.0 ft
Crests at major
13
7th of 125 gauges in New Jersey
Most recent flood crest
January 10, 2024
12.24 ft, major flooding
Location
Hunterdon County
Near Somerville (13.7 mi), Manville (14.8 mi)

Flood stages

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

Flood categories, South Branch Raritan River at Stanton
Action stage7.03May 13, 2002The level at which the NWS or its partners begin to take action
Flood stage (minor)8.019Dec 28, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage10.011Dec 18, 2023Some inundation of structures and roads near the stream
Major flood stage12.013Jan 10, 2024Extensive inundation of structures and roads

Every listed crest

48 crests from 1903 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the South Branch Raritan River at Stanton, 1903 to 2024 6810121416ft Flood stage 8.0 ftMajor 12.0 ft Oct 9, 1903: 10.50 ft, moderate flooding; 9,020 cubic feet per secondJan 7, 1905: 12.51 ft, major flooding; 6,840 cubic feet per secondJul 9, 1935: 10.80 ft, moderate flooding; 8,260 cubic feet per secondSep 21, 1938: 10.72 ft, moderate flooding; 8,130 cubic feet per secondMar 15, 1940: 12.19 ft, major flooding; 10,900 cubic feet per secondJul 19, 1945: 12.22 ft, major flooding; 10,900 cubic feet per secondNov 7, 1951: 12.01 ft, major flooding; 10,600 cubic feet per secondAug 13, 1955: 10.29 ft, moderate flooding; 7,330 cubic feet per secondAug 19, 1955: 15.22 ft, major flooding; 18,000 cubic feet per secondOct 14, 1955: 12.55 ft, major flooding; 11,700 cubic feet per secondApr 2, 1970: 11.96 ft, moderate flooding; 10,500 cubic feet per secondJun 22, 1972: 10.25 ft, moderate flooding; 7,260 cubic feet per secondJan 26, 1978: 9.19 ft, minor flooding; 5,560 cubic feet per secondJan 25, 1979: 12.72 ft, major flooding; 12,100 cubic feet per secondFeb 3, 1982: 10.02 ft, moderate flooding; 5,300 cubic feet per secondJul 7, 1984: 12.04 ft, major flooding; 10,600 cubic feet per secondSep 20, 1989: 9.65 ft, minor flooding; 6,240 cubic feet per secondJun 6, 1992: 7.75 ft, action stage; 3,670 cubic feet per secondDec 5, 1993: 7.38 ft, action stage; 3,260 cubic feet per secondJan 19, 1996: 9.76 ft, minor flooding; 6,430 cubic feet per secondOct 19, 1996: 9.91 ft, minor flooding; 6,680 cubic feet per secondDec 2, 1996: 9.60 ft, minor floodingApr 10, 1998: 6.61 ft, below flood stage; 2,520 cubic feet per secondMar 22, 1999: 6.46 ft, below flood stageSep 16, 1999: 13.90 ft, major flooding; 14,800 cubic feet per secondMay 13, 2002: 7.19 ft, action stage; 3,060 cubic feet per secondOct 29, 2003: 8.17 ft, minor floodingDec 11, 2003: 9.24 ft, minor flooding; 5,580 cubic feet per secondApr 2, 2005: 10.10 ft, moderate flooding; 7,010 cubic feet per secondOct 9, 2005: 8.51 ft, minor flooding; 4,580 cubic feet per secondApr 16, 2007: 12.27 ft, major flooding; 11,000 cubic feet per secondMar 14, 2010: 10.57 ft, moderate floodingMar 11, 2011: 9.21 ft, minor flooding; 5,535 cubic feet per secondApr 17, 2011: 8.10 ft, minor floodingAug 28, 2011: 13.61 ft, major flooding; 14,100 cubic feet per secondSep 8, 2011: 11.98 ft, moderate flooding; 10,560 cubic feet per secondMay 1, 2014: 8.71 ft, minor flooding; 4,833 cubic feet per secondNov 25, 2018: 9.15 ft, minor flooding; 5,713 cubic feet per secondAug 4, 2020: 8.45 ft, minor flooding; 4,706 cubic feet per secondDec 1, 2020: 8.92 ft, minor flooding; 5,346 cubic feet per secondDec 25, 2020: 8.26 ft, minor flooding; 4,462 cubic feet per secondAug 23, 2021: 8.55 ft, minor flooding; 4,838 cubic feet per secondSep 2, 2021: 15.16 ft, major flooding; 17,857 cubic feet per secondApr 8, 2022: 9.09 ft, minor flooding; 5,590 cubic feet per secondJul 10, 2023: 8.86 ft, minor flooding; 5,262 cubic feet per secondDec 18, 2023: 11.19 ft, moderate flooding; 9,031 cubic feet per secondDec 28, 2023: 9.82 ft, minor flooding; 6,694 cubic feet per secondJan 10, 2024: 12.24 ft, major flooding; 11,078 cubic feet per second Highest, 15.22 ft, Aug 19, 1955 192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, South Branch Raritan River at Stanton 1900s: 2 1910s: 0 1920s: 0 1930s: 2 1940s: 2 1950s: 4 1960s: 0 1970s: 4 1980s: 3 1990s: 4 2000s: 5 2010s: 7 2020s: 10 10 1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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, South Branch Raritan River at Stanton
1Aug 19, 195515.22+7.22Major18,000
2Sep 2, 202115.16+7.16Major17,857
3Sep 16, 199913.90+5.90Major14,800
4Aug 28, 201113.61+5.61Major14,100
5Jan 25, 197912.72+4.72Major12,100
6Oct 14, 195512.55+4.55Major11,700
7Jan 7, 190512.51+4.51Major6,840
8Apr 16, 200712.27+4.27Major11,000
9Jan 10, 202412.24+4.24Major11,078
10Jul 19, 194512.22+4.22Major10,900
11Mar 15, 194012.19+4.19Major10,900
12Jul 7, 198412.04+4.04Major10,600
13Nov 7, 195112.01+4.01Major10,600
14Sep 8, 201111.98+3.98Moderate10,560
15Apr 2, 197011.96+3.96Moderate10,500
16Dec 18, 202311.19+3.19Moderate9,031
17Jul 9, 193510.80+2.80Moderate8,260
18Sep 21, 193810.72+2.72Moderate8,130
19Mar 14, 201010.57+2.57Moderate—
20Oct 9, 190310.50+2.50Moderate9,020
21Aug 13, 195510.29+2.29Moderate7,330
22Jun 22, 197210.25+2.25Moderate7,260
23Apr 2, 200510.10+2.10Moderate7,010
24Feb 3, 198210.02+2.02Moderate5,300
25Oct 19, 19969.91+1.91Minor6,680
26Dec 28, 20239.82+1.82Minor6,694
27Jan 19, 19969.76+1.76Minor6,430
28Sep 20, 19899.65+1.65Minor6,240
29Dec 2, 19969.60+1.60Minor—
30Dec 11, 20039.24+1.24Minor5,580
31Mar 11, 20119.21+1.21Minor5,535
32Jan 26, 19789.19+1.19Minor5,560
33Nov 25, 20189.15+1.15Minor5,713
34Apr 8, 20229.09+1.09Minor5,590
35Dec 1, 20208.92+0.92Minor5,346
36Jul 10, 20238.86+0.86Minor5,262
37May 1, 20148.71+0.71Minor4,833
38Aug 23, 20218.55+0.55Minor4,838
39Oct 9, 20058.51+0.51Minor4,580
40Aug 4, 20208.45+0.45Minor4,706
41Dec 25, 20208.26+0.26Minor4,462
42Oct 29, 20038.17+0.17Minor—
43Apr 17, 20118.10+0.10Minor—
44Jun 6, 19927.75−0.25Action3,670
45Dec 5, 19937.38−0.62Action3,260
46May 13, 20027.19−0.81Action3,060
47Apr 10, 19986.61−1.39Below flood stage2,520
48Mar 22, 19996.46−1.54Below flood stage—

The worst floods along the South Branch Raritan River

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

September 2, 2021: 15.16 ft here, major flooding

September 16, 1999: 13.90 ft here, major flooding

August 28, 2011: 13.61 ft here, major flooding

Gauges on the South Branch Raritan River

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

Flood gauges on the South Branch Raritan River
High BridgeNJ10.014.26 ft, Jan 28, 19941
Stanton this gaugeNJ8.015.22 ft, Aug 19, 195513

Other gauges in Hunterdon County

Flood gauges in Hunterdon County
Frenchtown16.027.79 ft, Aug 20, 19557
Clinton5.57.41 ft, Sep 20, 19890
Reaville6.519.47 ft, Sep 2, 20210
High Bridge10.014.26 ft, Jan 28, 19941
Clinton4.05.35 ft, Sep 2, 20210
Glen Gardner7.09.27 ft, Sep 16, 19990

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

NOAA National Water Prediction Service, gauge STTN4, 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.