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Delaware River at New Hope-Lambertville Bridge

Highest listed crest 24.16 ftFlood stage 13.0 ft19 crests since 1786

The Delaware River at New Hope-Lambertville Bridge crested at major flood stage 8 times among the 19 crests the National Weather Service lists from 1786 to 2021. The highest, 24.16 ft on August 20, 1955, was major flooding, 11.16 feet above flood stage. 12 other gauges on the Delaware River crested above flood stage within a week of it, 8 at their own highest listed crest.

The gauge

Highest listed crest
24.16 ft
August 20, 1955
Flood stage
13.0 ft
Major flooding from 16.0 ft
Crests at major
8
21st of 170 gauges in Pennsylvania
Most recent flood crest
September 2, 2021
13.39 ft, minor flooding
Location
Bucks County
Near Trenton (13.8 mi), Princeton (14.9 mi)

Flood stages

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

Flood categories, Delaware River at New Hope-Lambertville Bridge
Action stage12.02Aug 29, 2011The level at which the NWS or its partners begin to take action
Flood stage (minor)13.06Sep 2, 2021Minimal or no property damage, but possibly some public threat
Moderate flood stage15.03Sep 9, 2011Some inundation of structures and roads near the stream
Major flood stage16.08Jun 29, 2006Extensive inundation of structures and roads

Every listed crest

19 crests from 1786 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Delaware River at New Hope-Lambertville Bridge, 1786 to 2021 1015202530ft Flood stage 13.0 ftMajor 16.0 ft Oct 6, 1786: 13.90 ft, minor floodingJan 8, 1841: 17.90 ft, major floodingMar 15, 1846: 15.50 ft, moderate floodingMar 2, 1902: 17.80 ft, major flooding; 214,000 cubic feet per secondOct 11, 1903: 21.80 ft, major flooding; 274,000 cubic feet per secondMar 19, 1936: 17.89 ft, major floodingMay 24, 1942: 14.23 ft, minor floodingDec 12, 1952: 13.08 ft, minor floodingAug 20, 1955: 24.16 ft, major floodingOct 16, 1955: 12.04 ft, action stageMay 30, 1984: 13.21 ft, minor floodingJan 20, 1996: 15.34 ft, moderate floodingSep 19, 2004: 16.50 ft, major floodingApr 4, 2005: 19.60 ft, major floodingJun 29, 2006: 19.08 ft, major floodingMar 12, 2011: 13.07 ft, minor floodingAug 29, 2011: 12.74 ft, action stageSep 9, 2011: 15.10 ft, moderate floodingSep 2, 2021: 13.39 ft, minor flooding; 148,800 cubic feet per second Highest, 24.16 ft, Aug 20, 1955 180018401880192019602000

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Delaware River at New Hope-Lambertville Bridge 1780s: 1 1790s: 0 1800s: 0 1810s: 0 1820s: 0 1830s: 0 1840s: 2 1850s: 0 1860s: 0 1870s: 0 1880s: 0 1890s: 0 1900s: 2 1910s: 0 1920s: 0 1930s: 1 1940s: 1 1950s: 2 1960s: 0 1970s: 0 1980s: 1 1990s: 1 2000s: 3 3 2010s: 2 2020s: 1 1780s1800s1820s1840s1860s1880s1900s1920s1940s1960s1980s2000s2020s
  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, Delaware River at New Hope-Lambertville Bridge
1Aug 20, 195524.16+11.16Major—
2Oct 11, 190321.80+8.80Major274,000
3Apr 4, 200519.60+6.60Major—
4Jun 29, 200619.08+6.08Major—
5Jan 8, 184117.90+4.90Major—
6Mar 19, 193617.89+4.89Major—
7Mar 2, 190217.80+4.80Major214,000
8Sep 19, 200416.50+3.50Major—
9Mar 15, 184615.50+2.50Moderate—
10Jan 20, 199615.34+2.34Moderate—
11Sep 9, 201115.10+2.10Moderate—
12May 24, 194214.23+1.23Minor—
13Oct 6, 178613.90+0.90Minor—
14Sep 2, 202113.39+0.39Minor148,800
15May 30, 198413.21+0.21Minor—
16Dec 12, 195213.08+0.08Minor—
17Mar 12, 201113.07+0.07Minor—
18Aug 29, 201112.74−0.26Action—
19Oct 16, 195512.04−0.96Action—

The worst floods along the Delaware River

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

August 20, 1955: 24.16 ft here, major flooding

  • EastonPA · Aug 19, 1955 · 44.40 ft · Major · its highest
  • RiegelsvilleNJ · Aug 20, 1955 · 38.85 ft · Major · its highest
  • Tocks IslandNJ · Aug 19, 1955 · 37.40 ft · Major · its highest
  • MontaguePA · Aug 19, 1955 · 35.15 ft · Major · its highest
  • StocktonPA · Aug 20, 1955 · 30.44 ft · Major · its highest
  • BelvidereNJ · Aug 19, 1955 · 30.21 ft · Major · its highest
  • TrentonNJ · Aug 20, 1955 · 28.60 ft · Major
  • FrenchtownNJ · Aug 20, 1955 · 27.79 ft · Major · its highest
  • Washington CrossingPA · Aug 20, 1955 · 27.77 ft · Major · its highest
  • BarryvilleNY · Aug 19, 1955 · 26.40 ft · Major

October 11, 1903: 21.80 ft here, major flooding

April 4, 2005: 19.60 ft here, major flooding

Gauges on the Delaware River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Delaware River
BarryvilleNY17.028.97 ft, Jun 28, 20062
BelvidereNJ22.030.21 ft, Aug 19, 19555
Bridesburg (IN MLLW)PA8.510.99 ft, Jan 10, 20242
Burlington (IN MLLW)PA9.311.99 ft, Jan 10, 20247
CallicoonPA12.020.38 ft, Jun 28, 20065
Delaware City (IN MLLW)DE7.59.73 ft, Oct 30, 20122
EastonPA22.044.40 ft, Aug 19, 19557
FrenchtownNJ16.027.79 ft, Aug 20, 19557
LordvillePA20.028.87 ft, Jun 28, 20061
Marcus Hook (IN MLLW)PA7.710.14 ft, Oct 30, 20124
Matamoras/Port JervisPA18.026.60 ft, Feb 12, 19814
MontaguePA25.035.15 ft, Aug 19, 19554
New Hope-Lambertville Bridge this gaugePA13.024.16 ft, Aug 20, 19558
Newbold Island (IN MLLW)PA10.213.22 ft, Sep 1, 20217
RiegelsvilleNJ22.038.85 ft, Aug 20, 19556
StocktonPA18.030.44 ft, Aug 20, 19555
Tocks IslandNJ21.037.40 ft, Aug 19, 19555
TrentonNJ20.030.60 ft, Mar 8, 19045
USCG Station Washington Street (IN MLLW)PA8.210.66 ft, Jan 10, 20246
Washington CrossingPA16.027.77 ft, Aug 20, 19554

Other gauges in Bucks County

Flood gauges in Bucks County
Burlington (IN MLLW)9.311.99 ft, Jan 10, 20247
Newbold Island (IN MLLW)10.213.22 ft, Sep 1, 20217
Stockton18.030.44 ft, Aug 20, 19555
Washington Crossing16.027.77 ft, Aug 20, 19554
Langhorne9.022.84 ft, Aug 19, 195520
Penns Park13.024.26 ft, Sep 2, 20218

Bucks County: every hazard · River floods across the country · Pennsylvania

NOAA National Water Prediction Service, gauge NHPP1, 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.