Clackamas River near Oregon City

Highest listed crest 46.56 ftFlood stage 39.0 ft8 crests since 2003

The Clackamas River near Oregon City crested at major flood stage 1 time among the 8 crests the National Weather Service lists from 2003 to 2025. The highest, 46.56 ft on December 19, 2025, was major flooding, 7.56 feet above flood stage. 1 other gauge on the Clackamas River crested above flood stage within a week of it.

The gauge

Highest listed crest: 46.56 ft; December 19, 2025; 75,427 cubic feet per second
Flood stage: 39.0 ft; Major flooding from 46.0 ft
Crests at major: 1; 45th of 100 gauges in Oregon
Most recent flood crest: December 19, 2025; 46.56 ft, major flooding
Location: Clackamas County; Near Gladstone (0.9 mi), Oregon City (2.7 mi), West Linn (3.1 mi)
Identifiers: NWS COCO3; USGS 14211010

Flood stages

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

Flood categories, Clackamas River near Oregon City

Action stage	38.0	1	Feb 1, 2003	The level at which the NWS or its partners begin to take action
Flood stage (minor)	39.0	4	Jan 20, 2012	Minimal or no property damage, but possibly some public threat
Moderate flood stage	42.0	2	Jan 17, 2011	Some inundation of structures and roads near the stream
Major flood stage	46.0	1	Dec 19, 2025	Extensive inundation of structures and roads

Every listed crest

8 crests from 2003 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

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.
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, Clackamas River near Oregon City

1	Dec 19, 2025	46.56	+7.56	Major	75,427
2	Jan 2, 2009	45.41	+6.41	Moderate	66,514
3	Jan 17, 2011	42.52	+3.52	Moderate	55,273
4	Jan 11, 2006	40.64	+1.64	Minor	47,019
5	Dec 31, 2005	40.61	+1.61	Minor	46,842
6	Jan 20, 2012	39.53	+0.53	Minor	42,000
7	Nov 7, 2006	39.35	+0.35	Minor	41,200
8	Feb 1, 2003	38.50	−0.50	Action	48,000

The worst floods along the Clackamas River

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

December 19, 2025: 46.56 ft here, major flooding

EstacadaOR · Dec 19, 2025 · 26.25 ft · Major

January 2, 2009: 45.41 ft here, moderate flooding

EstacadaOR · Jan 2, 2009 · 22.75 ft · Minor

January 17, 2011: 42.52 ft here, moderate flooding

EstacadaOR · Jan 17, 2011 · 24.01 ft · Moderate

Gauges on the Clackamas River

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

Flood gauges on the Clackamas River

Estacada	OR	20.0	30.36 ft, Dec 22, 1964	5
Oregon City this gauge	OR	39.0	46.56 ft, Dec 19, 2025	1

Other gauges in Clackamas County

Flood gauges in Clackamas County

Estacada	20.0	30.36 ft, Dec 22, 1964	5
Milwaukie	30.3	31.30 ft, Dec 8, 2015	0
Canby	20.0	26.76 ft, Dec 22, 1964	3
Bull Run	19.3	22.59 ft, Feb 7, 1996	4
West Linn	13.5	18.32 ft, Feb 10, 1996	5
Falls at Oregon City	64.0	71.30 ft, Feb 5, 1990	10
Falls at Oregon City	27.0	50.50 ft, Feb 5, 1890	6

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

NOAA National Water Prediction Service, gauge COCO3, 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.