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Allegheny River at Warren

Highest listed crest 19.40 ftFlood stage 14.0 ft19 crests since 1865

The Allegheny River at Warren crested at major flood stage 6 times among the 19 crests the National Weather Service lists from 1865 to 1972. The highest, 19.40 ft on March 17, 1865, was major flooding, 5.40 feet above flood stage. 1 other gauge on the Allegheny River crested above flood stage within a week of it.

The gauge

Highest listed crest
19.40 ft
March 17, 1865
Flood stage
14.0 ft
Major flooding from 17.0 ft
Crests at major
6
37th of 170 gauges in Pennsylvania
Most recent flood crest
March 10, 1964
14.20 ft, minor flooding
Location
Warren County
Pennsylvania

Flood stages

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

Flood categories, Allegheny River at Warren
Action stage12.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)14.06Mar 10, 1964Minimal or no property damage, but possibly some public threat
Moderate flood stage15.06Mar 6, 1964Some inundation of structures and roads near the stream
Major flood stage17.06Mar 8, 1956Extensive inundation of structures and roads

Every listed crest

19 crests from 1865 to 1972. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Allegheny River at Warren, 1865 to 1972 101214161820ft Flood stage 14.0 ftMajor 17.0 ft Mar 17, 1865: 19.40 ft, major floodingDec 12, 1873: 17.70 ft, major floodingMar 2, 1902: 15.80 ft, moderate floodingMar 27, 1913: 17.20 ft, major floodingMar 30, 1916: 16.00 ft, moderate floodingMar 13, 1920: 15.80 ft, moderate floodingMar 28, 1936: 15.90 ft, moderate floodingApr 6, 1947: 17.00 ft, major floodingMar 22, 1948: 17.10 ft, major floodingMar 29, 1950: 14.40 ft, minor floodingMar 8, 1956: 18.30 ft, major floodingJan 22, 1959: 16.50 ft, moderate floodingMar 31, 1960: 14.00 ft, minor floodingFeb 26, 1961: 14.00 ft, minor floodingMay 25, 1961: 14.90 ft, minor floodingMar 27, 1963: 14.00 ft, minor floodingMar 6, 1964: 15.00 ft, moderate floodingMar 10, 1964: 14.20 ft, minor floodingJun 24, 1972: 11.50 ft, below flood stage; 33,600 cubic feet per second Highest, 19.40 ft, Mar 17, 1865 18801900192019401960

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Allegheny River at Warren 1860s: 1 1870s: 1 1880s: 0 1890s: 0 1900s: 1 1910s: 2 1920s: 1 1930s: 1 1940s: 2 1950s: 3 1960s: 6 6 1970s: 0 1860s1870s1880s1890s1900s1910s1920s1930s1940s1950s1960s1970s
  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, Allegheny River at Warren
1Mar 17, 186519.40+5.40Major—
2Mar 8, 195618.30+4.30Major—
3Dec 12, 187317.70+3.70Major—
4Mar 27, 191317.20+3.20Major—
5Mar 22, 194817.10+3.10Major—
6Apr 6, 194717.00+3.00Major—
7Jan 22, 195916.50+2.50Moderate—
8Mar 30, 191616.00+2.00Moderate—
9Mar 28, 193615.90+1.90Moderate—
10Mar 2, 190215.80+1.80Moderate—
11Mar 13, 192015.80+1.80Moderate—
12Mar 6, 196415.00+1.00Moderate—
13May 25, 196114.90+0.90Minor—
14Mar 29, 195014.40+0.40Minor—
15Mar 10, 196414.20+0.20Minor—
16Mar 31, 196014.000.00Minor—
17Feb 26, 196114.000.00Minor—
18Mar 27, 196314.000.00Minor—
19Jun 24, 197211.50−2.50Below flood stage33,600

The worst floods along the Allegheny River

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

March 17, 1865: 19.40 ft here, major flooding

  • FranklinPA · Mar 17, 1865 · 25.00 ft · Major

March 8, 1956: 18.30 ft here, major flooding

March 27, 1913: 17.20 ft here, major flooding

Gauges on the Allegheny River

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

Flood gauges on the Allegheny River
EldredPA23.029.10 ft, Jun 23, 19722
OleanNY12.026.20 ft, Jun 23, 19722
SalamancaNY12.024.01 ft, Jun 23, 19721
Warren this gaugePA14.019.40 ft, Mar 17, 18656
West HickoryPA14.017.83 ft, Jan 25, 19643
FranklinPA17.026.00 ft, Feb 27, 19173
ParkerPA20.029.60 ft, Jan 22, 19592
Rimer Lock and DamPA19.021.80 ft, Jan 22, 19590
Mosgrove Lock and DamPA19.027.70 ft, Mar 10, 19642
Kittanning Lock and DamPA21.030.70 ft, Mar 26, 19136
Clinton Lock and DamPA21.026.40 ft, Mar 18, 19361
Freeport Lock and DamPA23.033.30 ft, Mar 18, 19361
Natrona Lock and DamPA21.032.10 ft, Mar 18, 19365
C.W. Bill Young Lock and DamPA17.031.10 ft, Mar 18, 19362
Sharpsburg Lock and DamPA21.026.90 ft, Jun 24, 19721

Other gauges in Warren County

Flood gauges in Warren County
Russell9.010.90 ft, Mar 14, 19365

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

NOAA National Water Prediction Service, gauge WRRP1, 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.