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Chartiers Creek at Carnegie

Highest listed crest 25.05 ftFlood stage 20.0 ft4 crests since 2004

The Chartiers Creek at Carnegie crested at major flood stage 1 time among the 4 crests the National Weather Service lists from 2004 to 2021. The highest, 25.05 ft on September 18, 2004, was major flooding, 5.05 feet above flood stage.

The gauge

Highest listed crest
25.05 ft
September 18, 2004; 25,000 cubic feet per second
Flood stage
20.0 ft
Major flooding from 23.0 ft
Crests at major
1
103rd of 170 gauges in Pennsylvania
Most recent flood crest
September 18, 2004
25.05 ft, major flooding
Location
Allegheny County
Near Mount Lebanon (3.0 mi), Bethel Park (6.2 mi), Whitehall (6.3 mi)

Flood stages

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

Flood categories, Chartiers Creek at Carnegie
Action stage14.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)20.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage21.00—Some inundation of structures and roads near the stream
Major flood stage23.01Sep 18, 2004Extensive inundation of structures and roads

Every listed crest

4 crests from 2004 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Chartiers Creek at Carnegie, 2004 to 2021 0102030ft Flood stage 20.0 ftMajor 23.0 ft Sep 18, 2004: 25.05 ft, major flooding; 25,000 cubic feet per secondMar 4, 2008: 8.30 ft, below flood stage; 5,229 cubic feet per secondJun 6, 2010: 4.80 ft, below flood stage; 2,314 cubic feet per secondSep 1, 2021: 13.81 ft, below flood stage Highest, 25.05 ft, Sep 18, 2004 2005201020152020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Chartiers Creek at Carnegie 2000s: 1 1 2010s: 0 2020s: 0 2000s2010s2020s
  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.
  3. 1 crest measured on an earlier gauge datum is left out: 16.37 ft on Aug 6, 1956.

Highest crests

Highest listed crests, Chartiers Creek at Carnegie
1Sep 18, 200425.05+5.05Major25,000
2Sep 1, 202113.81−6.19Below flood stage—
3Mar 4, 20088.30−11.70Below flood stage5,229
4Jun 6, 20104.80−15.20Below flood stage2,314

Other gauges in Allegheny County

Flood gauges in Allegheny County
C.W. Bill Young Lock and Dam17.031.10 ft, Mar 18, 19362
Natrona Lock and Dam21.032.10 ft, Mar 18, 19365
Sharpsburg Lock and Dam21.026.90 ft, Jun 24, 19721
Girty's Run11.013.56 ft, Jul 5, 20180
Etna9.010.28 ft, May 30, 19860
Braddock Lock and Dam22.035.30 ft, Mar 18, 19368
Elizabeth Lock and Dam20.032.50 ft, Mar 18, 19369
Dashields Lock and Dam25.042.80 ft, Mar 18, 19365
Pittsburgh22.046.00 ft, Mar 18, 193622
Etna13.014.60 ft, Sep 1, 20210
Turtle Creek6.011.34 ft, Jun 18, 20091
Sutersville20.032.50 ft, Oct 16, 195412

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

NOAA National Water Prediction Service, gauge CARP1, 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.