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San Carlos River above Peridot

Highest listed crest 13.07 ftFlood stage 11.0 ft27 crests since 1978

The San Carlos River above Peridot crested at major flood stage 1 time among the 27 crests the National Weather Service lists from 1978 to 2019. The highest, 13.07 ft on November 25, 1978, was major flooding, 2.07 feet above flood stage.

The gauge

Highest listed crest
13.07 ft
November 25, 1978; 22,400 cubic feet per second
Flood stage
11.0 ft
Major flooding from 13.0 ft
Crests at major
1
12th of 47 gauges in Arizona
Most recent flood crest
July 31, 2006
12.24 ft, moderate flooding
Location
Graham County
Arizona

Flood stages

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

Flood categories, San Carlos River above Peridot
Action stage10.01Mar 1, 1991The level at which the NWS or its partners begin to take action
Flood stage (minor)11.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage12.02Jul 31, 2006Some inundation of structures and roads near the stream
Major flood stage13.01Nov 25, 1978Extensive inundation of structures and roads

Every listed crest

27 crests from 1978 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the San Carlos River above Peridot, 1978 to 2019 468101214ft Flood stage 11.0 ftMajor 13.0 ft Nov 25, 1978: 13.07 ft, major flooding; 22,400 cubic feet per secondFeb 15, 1980: 9.80 ft, below flood stage; 12,300 cubic feet per secondSep 22, 1981: 6.50 ft, below flood stage; 565 cubic feet per secondFeb 11, 1982: 7.90 ft, below flood stage; 6,260 cubic feet per secondMar 25, 1983: 7.90 ft, below flood stage; 6,260 cubic feet per secondOct 1, 1983: 9.24 ft, below flood stage; 10,300 cubic feet per secondDec 27, 1984: 7.15 ft, below flood stage; 4,470 cubic feet per secondJul 16, 1986: 6.57 ft, below flood stage; 3,240 cubic feet per secondDec 7, 1986: 7.00 ft, below flood stage; 4,130 cubic feet per secondAug 27, 1988: 6.65 ft, below flood stage; 3,400 cubic feet per secondAug 3, 1989: 6.53 ft, below flood stage; 3,160 cubic feet per secondAug 14, 1990: 9.96 ft, below flood stage; 12,900 cubic feet per secondMar 1, 1991: 10.23 ft, action stage; 13,900 cubic feet per secondFeb 13, 1992: 9.74 ft, below flood stage; 13,200 cubic feet per secondJan 8, 1993: 12.12 ft, moderate flooding; 54,800 cubic feet per secondMar 20, 1994: 6.09 ft, below flood stage; 2,940 cubic feet per secondJan 5, 1995: 9.30 ft, below flood stage; 27,900 cubic feet per secondSep 11, 1996: 6.60 ft, below flood stage; 1,990 cubic feet per secondFeb 28, 1997: 7.06 ft, below flood stage; 2,350 cubic feet per secondFeb 10, 1998: 7.11 ft, below flood stage; 2,350 cubic feet per secondJul 28, 1999: 8.57 ft, below flood stage; 12,300 cubic feet per secondAug 22, 2000: 8.21 ft, below flood stage; 8,930 cubic feet per secondNov 7, 2000: 7.05 ft, below flood stage; 2,320 cubic feet per secondAug 7, 2002: 5.97 ft, below flood stage; 200 cubic feet per secondSep 10, 2003: 8.47 ft, below flood stage; 7,970 cubic feet per secondJul 31, 2006: 12.24 ft, moderate flooding; 26,400 cubic feet per secondMar 13, 2019: 9.57 ft, below flood stage; 6,540 cubic feet per second Highest, 13.07 ft, Nov 25, 1978 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, San Carlos River above Peridot 1970s: 1 1 1980s: 0 1990s: 1 2000s: 1 2010s: 0 1970s1980s1990s2000s2010s
  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. 49 crests measured on an earlier gauge datum are left out: 6.85 ft on Mar 17, 1930; 7.02 ft on Aug 7, 1930; 8.30 ft on Feb 10, 1932; 8.04 ft on Sep 8, 1933; 7.35 ft on Aug 18, 1934; 8.45 ft on Feb 7, 1935; and more.

Highest crests

Highest listed crests, San Carlos River above Peridot
1Nov 25, 197813.07+2.07Major22,400
2Jul 31, 200612.24+1.24Moderate26,400
3Jan 8, 199312.12+1.12Moderate54,800
4Mar 1, 199110.23−0.77Action13,900
5Aug 14, 19909.96−1.04Below flood stage12,900
6Feb 15, 19809.80−1.20Below flood stage12,300
7Feb 13, 19929.74−1.26Below flood stage13,200
8Mar 13, 20199.57−1.43Below flood stage6,540
9Jan 5, 19959.30−1.70Below flood stage27,900
10Oct 1, 19839.24−1.76Below flood stage10,300
11Jul 28, 19998.57−2.43Below flood stage12,300
12Sep 10, 20038.47−2.53Below flood stage7,970
13Aug 22, 20008.21−2.79Below flood stage8,930
14Feb 11, 19827.90−3.10Below flood stage6,260
15Mar 25, 19837.90−3.10Below flood stage6,260
16Dec 27, 19847.15−3.85Below flood stage4,470
17Feb 10, 19987.11−3.89Below flood stage2,350
18Feb 28, 19977.06−3.94Below flood stage2,350
19Nov 7, 20007.05−3.95Below flood stage2,320
20Dec 7, 19867.00−4.00Below flood stage4,130
21Aug 27, 19886.65−4.35Below flood stage3,400
22Sep 11, 19966.60−4.40Below flood stage1,990
23Jul 16, 19866.57−4.43Below flood stage3,240
24Aug 3, 19896.53−4.47Below flood stage3,160
25Sep 22, 19816.50−4.50Below flood stage565
26Mar 20, 19946.09−4.91Below flood stage2,940
27Aug 7, 20025.97−5.03Below flood stage200

Other gauges in Graham County

Flood gauges in Graham County
Morenci13.017.30 ft, Oct 2, 19830
Calva20.023.00 ft, Oct 3, 19830

Graham County: every hazard · River floods across the country · Arizona

NOAA National Water Prediction Service, gauge SNCA3, 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.