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Connoquenessing Creek at Zelienople

Highest listed crest 18.17 ftFlood stage 10.0 ft19 crests since 1924

The Connoquenessing Creek at Zelienople crested at major flood stage 1 time among the 19 crests the National Weather Service lists from 1924 to 2024. The highest, 18.17 ft on September 18, 2004, was major flooding, 8.17 feet above flood stage.

The gauge

Highest listed crest
18.17 ft
September 18, 2004; 29,400 cubic feet per second
Flood stage
10.0 ft
Major flooding from 18.0 ft
Crests at major
1
103rd of 170 gauges in Pennsylvania
Most recent flood crest
April 3, 2024
15.24 ft, moderate flooding
Location
Beaver County
Near New Castle (13.5 mi)

Flood stages

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

Flood categories, Connoquenessing Creek at Zelienople
Action stage8.01Mar 15, 2007The level at which the NWS or its partners begin to take action
Flood stage (minor)10.09May 7, 2022Minimal or no property damage, but possibly some public threat
Moderate flood stage14.07Apr 3, 2024Some inundation of structures and roads near the stream
Major flood stage18.01Sep 18, 2004Extensive inundation of structures and roads

Every listed crest

19 crests from 1924 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Connoquenessing Creek at Zelienople, 1924 to 2024 5101520ft Flood stage 10.0 ftMajor 18.0 ft Jun 29, 1924: 16.66 ft, moderate flooding; 23,000 cubic feet per secondOct 16, 1954: 15.55 ft, moderate flooding; 18,200 cubic feet per secondSep 9, 2004: 14.75 ft, moderate flooding; 13,405 cubic feet per secondSep 18, 2004: 18.17 ft, major flooding; 29,400 cubic feet per secondMar 15, 2007: 8.71 ft, action stage; 6,013 cubic feet per secondMar 5, 2008: 11.39 ft, minor flooding; 9,207 cubic feet per secondMar 20, 2008: 5.52 ft, below flood stage; 2,983 cubic feet per secondJun 10, 2010: 10.82 ft, minor flooding; 8,524 cubic feet per secondDec 1, 2010: 14.76 ft, moderate flooding; 16,380 cubic feet per secondFeb 28, 2011: 11.31 ft, minor flooding; 9,216 cubic feet per secondMar 11, 2011: 11.21 ft, minor flooding; 9,065 cubic feet per secondJun 25, 2014: 10.60 ft, minor flooding; 8,260 cubic feet per secondNov 6, 2017: 10.79 ft, minor flooding; 7,666 cubic feet per secondFeb 16, 2018: 13.35 ft, minor flooding; 11,934 cubic feet per secondSep 10, 2018: 14.36 ft, moderate flooding; 14,643 cubic feet per secondMay 29, 2019: 15.34 ft, moderate flooding; 17,617 cubic feet per secondFeb 18, 2022: 13.59 ft, minor flooding; 11,692 cubic feet per secondMay 7, 2022: 10.93 ft, minor flooding; 7,835 cubic feet per secondApr 3, 2024: 15.24 ft, moderate flooding; 13,256 cubic feet per second Highest, 18.17 ft, Sep 18, 2004 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Connoquenessing Creek at Zelienople 1920s: 1 1930s: 0 1940s: 0 1950s: 1 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 3 2010s: 9 9 2020s: 3 1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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, Connoquenessing Creek at Zelienople
1Sep 18, 200418.17+8.17Major29,400
2Jun 29, 192416.66+6.66Moderate23,000
3Oct 16, 195415.55+5.55Moderate18,200
4May 29, 201915.34+5.34Moderate17,617
5Apr 3, 202415.24+5.24Moderate13,256
6Dec 1, 201014.76+4.76Moderate16,380
7Sep 9, 200414.75+4.75Moderate13,405
8Sep 10, 201814.36+4.36Moderate14,643
9Feb 18, 202213.59+3.59Minor11,692
10Feb 16, 201813.35+3.35Minor11,934
11Mar 5, 200811.39+1.39Minor9,207
12Feb 28, 201111.31+1.31Minor9,216
13Mar 11, 201111.21+1.21Minor9,065
14May 7, 202210.93+0.93Minor7,835
15Jun 10, 201010.82+0.82Minor8,524
16Nov 6, 201710.79+0.79Minor7,666
17Jun 25, 201410.60+0.60Minor8,260
18Mar 15, 20078.71−1.29Action6,013
19Mar 20, 20085.52−4.48Below flood stage2,983

Other gauges in Beaver County

Flood gauges in Beaver County
Beaver Falls15.017.40 ft, Mar 27, 19130
Montgomery Lock and Dam33.055.00 ft, Mar 18, 193610
Moffatts Mill13.014.29 ft, Sep 18, 20040

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

NOAA National Water Prediction Service, gauge ZLPP1, 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.