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Molalla River near Canby

Highest listed crest 26.76 ftFlood stage 20.0 ft11 crests since 1948

The Molalla River near Canby crested at major flood stage 3 times among the 11 crests the National Weather Service lists from 1948 to 2025. The highest, 26.76 ft on December 22, 1964, was major flooding, 6.76 feet above flood stage.

The gauge

Highest listed crest
26.76 ft
December 22, 1964; 43,600 cubic feet per second
Flood stage
20.0 ft
Major flooding from 25.0 ft
Crests at major
3
30th of 100 gauges in Oregon
Most recent flood crest
December 19, 2025
23.48 ft, moderate flooding
Location
Clackamas County
Near Canby (1.4 mi), Wilsonville (6.2 mi), Oregon City (8.2 mi)

Flood stages

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

Flood categories, Molalla River near Canby
Action stage18.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)20.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage22.48Dec 19, 2025Some inundation of structures and roads near the stream
Major flood stage25.03Jan 21, 1972Extensive inundation of structures and roads

Every listed crest

11 crests from 1948 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Molalla River near Canby, 1948 to 2025 2022242628ft Flood stage 20.0 ftMajor 25.0 ft Jan 7, 1948: 24.90 ft, moderate flooding; 25,100 cubic feet per secondNov 24, 1960: 25.00 ft, major floodingFeb 11, 1961: 24.00 ft, moderate floodingDec 22, 1964: 26.76 ft, major flooding; 43,600 cubic feet per secondJan 21, 1972: 25.45 ft, major flooding; 36,200 cubic feet per secondJan 15, 1974: 24.43 ft, moderate flooding; 31,200 cubic feet per secondFeb 7, 1996: 24.60 ft, moderate flooding; 32,000 cubic feet per secondNov 10, 1996: 24.00 ft, moderate floodingJan 2, 2009: 23.06 ft, moderate flooding; 22,953 cubic feet per secondJan 20, 2012: 23.00 ft, moderate flooding; 25,000 cubic feet per secondDec 19, 2025: 23.48 ft, moderate flooding; 26,749 cubic feet per second Highest, 26.76 ft, Dec 22, 1964 19501960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Molalla River near Canby 1940s: 1 1950s: 0 1960s: 3 3 1970s: 2 1980s: 0 1990s: 2 2000s: 1 2010s: 1 2020s: 1 1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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, Molalla River near Canby
1Dec 22, 196426.76+6.76Major43,600
2Jan 21, 197225.45+5.45Major36,200
3Nov 24, 196025.00+5.00Major—
4Jan 7, 194824.90+4.90Moderate25,100
5Feb 7, 199624.60+4.60Moderate32,000
6Jan 15, 197424.43+4.43Moderate31,200
7Feb 11, 196124.00+4.00Moderate—
8Nov 10, 199624.00+4.00Moderate—
9Dec 19, 202523.48+3.48Moderate26,749
10Jan 2, 200923.06+3.06Moderate22,953
11Jan 20, 201223.00+3.00Moderate25,000

Other gauges in Clackamas County

Flood gauges in Clackamas County
Estacada20.030.36 ft, Dec 22, 19645
Oregon City39.046.56 ft, Dec 19, 20251
Milwaukie30.331.30 ft, Dec 8, 20150
Bull Run19.322.59 ft, Feb 7, 19964
West Linn13.518.32 ft, Feb 10, 19965
Falls at Oregon City64.071.30 ft, Feb 5, 199010
Falls at Oregon City27.050.50 ft, Feb 5, 18906

Clackamas County: every hazard · River floods across the country · Oregon

NOAA National Water Prediction Service, gauge CANO3, 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.