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Lehigh River at Glendon

Highest listed crest 27.90 ftFlood stage 19.0 ft16 crests since 1972

The Lehigh River at Glendon crested at major flood stage 10 times among the 16 crests the National Weather Service lists from 1972 to 2024. The highest, 27.90 ft on April 3, 2005, was major flooding, 8.90 feet above flood stage. 2 other gauges on the Lehigh River crested above flood stage within a week of it.

The gauge

Highest listed crest
27.90 ft
April 3, 2005
Flood stage
19.0 ft
Major flooding from 21.0 ft
Crests at major
10
13th of 170 gauges in Pennsylvania
Most recent flood crest
January 10, 2024
19.63 ft, minor flooding
Location
Northampton County
Near Easton (1.5 mi), Phillipsburg (3.4 mi), Bethlehem (7.5 mi)

Flood stages

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

Flood categories, Lehigh River at Glendon
Action stage16.02Dec 17, 2000The level at which the NWS or its partners begin to take action
Flood stage (minor)19.02Jan 10, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage20.02Jan 20, 1996Some inundation of structures and roads near the stream
Major flood stage21.010Sep 2, 2021Extensive inundation of structures and roads

Every listed crest

16 crests from 1972 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Lehigh River at Glendon, 1972 to 2024 16182022242628ft Flood stage 19.0 ftMajor 21.0 ft Jun 23, 1972: 24.86 ft, major flooding; 60,600 cubic feet per secondJan 25, 1979: 22.44 ft, major flooding; 48,800 cubic feet per secondApr 16, 1983: 21.34 ft, major flooding; 47,200 cubic feet per secondSep 9, 1987: 20.82 ft, moderate flooding; 43,600 cubic feet per secondJan 20, 1996: 20.50 ft, moderate flooding; 39,900 cubic feet per secondDec 2, 1996: 18.70 ft, action stage; 32,000 cubic feet per secondDec 17, 2000: 16.14 ft, action stage; 22,100 cubic feet per secondSep 18, 2004: 24.50 ft, major floodingApr 3, 2005: 27.90 ft, major floodingJun 28, 2006: 27.90 ft, major floodingMar 11, 2011: 22.50 ft, major floodingAug 28, 2011: 19.20 ft, minor floodingSep 9, 2011: 21.45 ft, major floodingAug 5, 2020: 21.21 ft, major flooding; 43,337 cubic feet per secondSep 2, 2021: 24.11 ft, major flooding; 58,466 cubic feet per secondJan 10, 2024: 19.63 ft, minor flooding; 36,009 cubic feet per second Highest, 27.90 ft, Apr 3, 2005 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Lehigh River at Glendon 1970s: 2 1980s: 2 1990s: 1 2000s: 3 3 2010s: 3 2020s: 3 1970s1980s1990s2000s2010s2020s
  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, Lehigh River at Glendon
1Apr 3, 200527.90+8.90Major—
2Jun 28, 200627.90+8.90Major—
3Jun 23, 197224.86+5.86Major60,600
4Sep 18, 200424.50+5.50Major—
5Sep 2, 202124.11+5.11Major58,466
6Mar 11, 201122.50+3.50Major—
7Jan 25, 197922.44+3.44Major48,800
8Sep 9, 201121.45+2.45Major—
9Apr 16, 198321.34+2.34Major47,200
10Aug 5, 202021.21+2.21Major43,337
11Sep 9, 198720.82+1.82Moderate43,600
12Jan 20, 199620.50+1.50Moderate39,900
13Jan 10, 202419.63+0.63Minor36,009
14Aug 28, 201119.20+0.20Minor—
15Dec 2, 199618.70−0.30Action32,000
16Dec 17, 200016.14−2.86Action22,100

The worst floods along the Lehigh River

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

April 3, 2005: 27.90 ft here, major flooding

  • BethlehemPA · Apr 3, 2005 · 16.06 ft · Minor
  • WalnutportPA · Apr 3, 2005 · 10.49 ft · Minor

June 28, 2006: 27.90 ft here, major flooding

  • LehightonPA · Jun 28, 2006 · 13.51 ft · Moderate
  • WalnutportPA · Jun 28, 2006 · 12.49 ft · Moderate
  • BethlehemPA · Jun 28, 2006 · 17.74 ft · Minor

June 23, 1972: 24.86 ft here, major flooding

  • BethlehemPA · Jun 23, 1972 · 20.02 ft · Moderate
  • WalnutportPA · Jun 23, 1972 · 11.65 ft · Minor
  • LehightonPA · Jun 23, 1972 · 11.50 ft · Minor

Gauges on the Lehigh River

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

Flood gauges on the Lehigh River
White HavenPA8.09.85 ft, Dec 21, 19571
LehightonPA10.020.80 ft, Feb 28, 19026
WalnutportPA8.020.60 ft, May 23, 19422
BethlehemPA16.025.90 ft, May 23, 19423
Glendon this gaugePA19.027.90 ft, Apr 3, 200510

Other gauges in Northampton County

Flood gauges in Northampton County
Easton22.044.40 ft, Aug 19, 19557
Walnutport8.020.60 ft, May 23, 19422

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

NOAA National Water Prediction Service, gauge GLDP1, 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.