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Mahoning River at Warren

Highest listed crest 21.00 ftFlood stage 10.0 ft23 crests since 1913

The Mahoning River at Warren crested at major flood stage 7 times among the 23 crests the National Weather Service lists from 1913 to 2026. The highest, 21.00 ft on March 26, 1913, was major flooding, 11.00 feet above flood stage. 1 other gauge on the Mahoning River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
21.00 ft
March 26, 1913
Flood stage
10.0 ft
Major flooding from 12.5 ft
Crests at major
7
12th of 129 gauges in Ohio
Most recent flood crest
April 2, 2026
10.05 ft, minor flooding
Location
Trumbull County
Near Warren (0.5 mi), Niles (4.8 mi), Youngstown (13.1 mi)

Flood stages

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

Flood categories, Mahoning River at Warren
Action stage7.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)10.04Apr 2, 2026Minimal or no property damage, but possibly some public threat
Moderate flood stage11.012Feb 19, 2022Some inundation of structures and roads near the stream
Major flood stage12.57Jul 23, 2003Extensive inundation of structures and roads

Every listed crest

23 crests from 1913 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Mahoning River at Warren, 1913 to 2026 10121416182022ft Flood stage 10.0 ftMajor 12.5 ft Mar 26, 1913: 21.00 ft, major floodingOct 16, 1954: 11.20 ft, moderate floodingMay 13, 1956: 12.10 ft, moderate floodingApr 5, 1957: 11.30 ft, moderate floodingJan 22, 1959: 16.70 ft, major floodingFeb 11, 1959: 13.70 ft, major floodingMar 5, 1964: 12.80 ft, major floodingMar 11, 1964: 12.50 ft, major floodingApr 16, 1972: 11.20 ft, moderate floodingSep 13, 1979: 12.61 ft, major floodingDec 26, 1979: 10.10 ft, minor floodingDec 5, 1993: 11.12 ft, moderate floodingApr 13, 1994: 11.35 ft, moderate floodingJul 23, 2003: 14.88 ft, major floodingMay 23, 2004: 11.04 ft, moderate floodingFeb 7, 2008: 12.01 ft, moderate floodingMar 1, 2011: 11.81 ft, moderate flooding; 8,200 cubic feet per secondJan 13, 2017: 11.07 ft, moderate flooding; 7,367 cubic feet per secondApr 17, 2018: 12.15 ft, moderate flooding; 8,572 cubic feet per secondMar 29, 2020: 10.11 ft, minor flooding; 6,359 cubic feet per secondFeb 19, 2022: 11.08 ft, moderate flooding; 7,377 cubic feet per secondMar 8, 2022: 10.45 ft, minor flooding; 6,709 cubic feet per secondApr 2, 2026: 10.05 ft, minor flooding; 6,298 cubic feet per second Highest, 21.00 ft, Mar 26, 1913 192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Mahoning River at Warren 1910s: 1 1920s: 0 1930s: 0 1940s: 0 1950s: 5 5 1960s: 2 1970s: 3 1980s: 0 1990s: 2 2000s: 3 2010s: 3 2020s: 4 1910s1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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, Mahoning River at Warren
1Mar 26, 191321.00+11.00Major—
2Jan 22, 195916.70+6.70Major—
3Jul 23, 200314.88+4.88Major—
4Feb 11, 195913.70+3.70Major—
5Mar 5, 196412.80+2.80Major—
6Sep 13, 197912.61+2.61Major—
7Mar 11, 196412.50+2.50Major—
8Apr 17, 201812.15+2.15Moderate8,572
9May 13, 195612.10+2.10Moderate—
10Feb 7, 200812.01+2.01Moderate—
11Mar 1, 201111.81+1.81Moderate8,200
12Apr 13, 199411.35+1.35Moderate—
13Apr 5, 195711.30+1.30Moderate—
14Oct 16, 195411.20+1.20Moderate—
15Apr 16, 197211.20+1.20Moderate—
16Dec 5, 199311.12+1.12Moderate—
17Feb 19, 202211.08+1.08Moderate7,377
18Jan 13, 201711.07+1.07Moderate7,367
19May 23, 200411.04+1.04Moderate—
20Mar 8, 202210.45+0.45Minor6,709
21Mar 29, 202010.11+0.11Minor6,359
22Dec 26, 197910.10+0.10Minor—
23Apr 2, 202610.05+0.05Minor6,298

The worst floods along the Mahoning River

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

March 26, 1913: 21.00 ft here, major flooding

  • LeavittsburgOH · Mar 26, 1913 · 24.00 ft · Major · its highest

January 22, 1959: 16.70 ft here, major flooding

July 23, 2003: 14.88 ft here, major flooding

  • LeavittsburgOH · Jul 23, 2003 · 17.16 ft · Major
  • YoungstownOH · Jul 23, 2003 · 17.49 ft · Moderate · its highest

Gauges on the Mahoning River

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

Flood gauges on the Mahoning River
LeavittsburgOH12.524.00 ft, Mar 26, 191310
YoungstownOH14.017.49 ft, Jul 23, 20030
Warren this gaugeOH10.021.00 ft, Mar 26, 19137

Other gauges in Trumbull County

Flood gauges in Trumbull County
Phalanx Station9.513.46 ft, Jul 11, 20130
Leavittsburg12.524.00 ft, Mar 26, 191310

Trumbull County: every hazard · River floods across the country · Ohio

NOAA National Water Prediction Service, gauge WRNO1, 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.