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Trinity River at Hoopa

Highest listed crest 57.00 ftFlood stage 48.0 ft27 crests since 1964

The Trinity River at Hoopa crested at major flood stage 1 time among the 27 crests the National Weather Service lists from 1964 to 2025. The highest, 57.00 ft on December 22, 1964, was major flooding, 9.00 feet above flood stage.

The gauge

Highest listed crest
57.00 ft
December 22, 1964; 230,000 cubic feet per second
Flood stage
48.0 ft
Major flooding from 56.0 ft
Crests at major
1
33rd of 106 gauges in California
Most recent flood crest
December 22, 1964
57.00 ft, major flooding
Location
Humboldt County
California

Flood stages

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

Flood categories, Trinity River at Hoopa
Action stage44.01Jan 16, 1974The level at which the NWS or its partners begin to take action
Flood stage (minor)48.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage52.00—Some inundation of structures and roads near the stream
Major flood stage56.01Dec 22, 1964Extensive inundation of structures and roads

Every listed crest

27 crests from 1964 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Trinity River at Hoopa, 1964 to 2025 2030405060ft Flood stage 48.0 ftMajor 56.0 ft Dec 22, 1964: 57.00 ft, major flooding; 230,000 cubic feet per secondJan 24, 1970: 39.97 ft, below flood stage; 115,000 cubic feet per secondJan 18, 1971: 37.42 ft, below flood stage; 96,900 cubic feet per secondMar 3, 1972: 37.53 ft, below flood stage; 97,700 cubic feet per secondJan 16, 1974: 45.98 ft, action stage; 145,000 cubic feet per secondDec 20, 1981: 40.46 ft, below flood stage; 104,000 cubic feet per secondJan 27, 1983: 43.16 ft, below flood stage; 122,000 cubic feet per secondFeb 18, 1986: 42.43 ft, below flood stage; 116,000 cubic feet per secondJan 10, 1995: 37.06 ft, below flood stage; 82,230 cubic feet per secondJan 1, 1997: 42.97 ft, below flood stage; 122,000 cubic feet per secondFeb 27, 2010: 24.91 ft, below flood stage; 29,500 cubic feet per secondDec 29, 2010: 25.24 ft, below flood stage; 30,700 cubic feet per secondMar 30, 2012: 27.94 ft, below flood stage; 41,600 cubic feet per secondDec 2, 2012: 23.69 ft, below flood stage; 25,100 cubic feet per secondMar 10, 2014: 22.92 ft, below flood stage; 23,400 cubic feet per secondFeb 7, 2015: 31.59 ft, below flood stage; 58,200 cubic feet per secondJan 18, 2016: 35.11 ft, below flood stage; 81,000 cubic feet per secondFeb 10, 2017: 35.55 ft, below flood stage; 83,600 cubic feet per secondApr 8, 2018: 26.87 ft, below flood stage; 39,800 cubic feet per secondFeb 27, 2019: 36.31 ft, below flood stage; 88,100 cubic feet per secondJan 26, 2020: 23.65 ft, below flood stage; 25,100 cubic feet per secondDec 24, 2021: 20.13 ft, below flood stage; 14,500 cubic feet per secondDec 31, 2022: 30.29 ft, below flood stage; 55,700 cubic feet per secondMar 15, 2023: 31.97 ft, below flood stage; 64,700 cubic feet per secondNov 22, 2024: 31.02 ft, below flood stage; 59,500 cubic feet per secondFeb 4, 2025: 31.78 ft, below flood stage; 63,700 cubic feet per secondDec 21, 2025: 30.01 ft, below flood stage; 54,200 cubic feet per second Highest, 57.00 ft, Dec 22, 1964 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Trinity River at Hoopa 1960s: 1 1 1970s: 0 1980s: 0 1990s: 0 2000s: 0 2010s: 0 2020s: 0 1960s1970s1980s1990s2000s2010s2020s
  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. 2 crests measured on an earlier gauge datum are left out: 50.30 ft on Dec 22, 1955; 41.70 ft on Feb 19, 1958.

Highest crests

Highest listed crests, Trinity River at Hoopa
1Dec 22, 196457.00+9.00Major230,000
2Jan 16, 197445.98−2.02Action145,000
3Jan 27, 198343.16−4.84Below flood stage122,000
4Jan 1, 199742.97−5.03Below flood stage122,000
5Feb 18, 198642.43−5.57Below flood stage116,000
6Dec 20, 198140.46−7.54Below flood stage104,000
7Jan 24, 197039.97−8.03Below flood stage115,000
8Mar 3, 197237.53−10.47Below flood stage97,700
9Jan 18, 197137.42−10.58Below flood stage96,900
10Jan 10, 199537.06−10.94Below flood stage82,230
11Feb 27, 201936.31−11.69Below flood stage88,100
12Feb 10, 201735.55−12.45Below flood stage83,600
13Jan 18, 201635.11−12.89Below flood stage81,000
14Mar 15, 202331.97−16.03Below flood stage64,700
15Feb 4, 202531.78−16.22Below flood stage63,700
16Feb 7, 201531.59−16.41Below flood stage58,200
17Nov 22, 202431.02−16.98Below flood stage59,500
18Dec 31, 202230.29−17.71Below flood stage55,700
19Dec 21, 202530.01−17.99Below flood stage54,200
20Mar 30, 201227.94−20.06Below flood stage41,600
21Apr 8, 201826.87−21.13Below flood stage39,800
22Dec 29, 201025.24−22.76Below flood stage30,700
23Feb 27, 201024.91−23.09Below flood stage29,500
24Dec 2, 201223.69−24.31Below flood stage25,100
25Jan 26, 202023.65−24.35Below flood stage25,100
26Mar 10, 201422.92−25.08Below flood stage23,400
27Dec 24, 202120.13−27.87Below flood stage14,500

Other gauges in Humboldt County

Flood gauges in Humboldt County
Fernbridge20.029.50 ft, Dec 23, 19649
Fort Seward70.082.60 ft, Dec 22, 19640
Scotia51.072.00 ft, Dec 23, 19641
Orleans38.050.25 ft, Dec 22, 19641
Arcata22.032.70 ft, Dec 22, 19642
Miranda33.046.00 ft, Dec 22, 19642
Bridgeville17.024.00 ft, Dec 22, 19642

Humboldt County: every hazard · River floods across the country · California

NOAA National Water Prediction Service, gauge HOOC1, 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.