Tualatin River at West Linn water level

Name: Tualatin River at West Linn water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Tualatin River, Oregon, United States

Directions

Below flood stage

Water level

2.92ft Steady over the last 24 hours

Measured Oct 19, 2026, 12:30 AM PDT (27 min ago)

Flow: 218 cfs

History

7 days

Water level Forecast Minor flood stage

The forecast expects the river to fall to 2.80 ft by Saturday, October 24 at 11:00 AM. Issued Sunday, October 18 at 08:54 AM by NOAA National Weather Service.

What this means

The gauge at Tualatin River at West Linn reads 2.92 ft, a normal level.

It is 10.58 ft below the flood stage of 13.50 ft.

It has barely moved over the past 24 hours. The forecast expects the river to fall to 2.80 ft by Saturday, October 24 at 11:00 AM. Over the past 30 days it has moved between 2.85 ft and 2.92 ft.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record: 18.32 ftFebruary 10, 1996
Forecast peak: 2.89 ftSunday, October 18 at 11:00 PM

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 13.50 ft, still 10.58 ft away.

What happens at each level

18.00 ft: expect major widespread flooding of homes and structures from the City of Tualatin downstream to the confluence with the Willamette, along with numerous road closures. Also expect major flooding of homes and boat houses around Lake Oswego and along the Oswego Canal.
17.00 ft: expect flooding of numerous homes and structures along the Tualatin River upstream of the City of Tualatin down to the confluence with the Willamette, including flooding of homes in the Rivergrove area just east of I-5. Also expect overtopping of the Oswego Canal inlet gate and flooding along the Oswego Canal. The Oswego lake surface will begin rising even with all lake outlets fully opened.
16.00 ft: expect flooding of numerous homes and structures along the Tualatin River upstream of the City of Tualatin down to the confluence with the Willamette, along with flooding of homes in the Rivergrove area just east of I-5. Overtopping of the Oswego Canal inlet gate is possible at this level, which would lead to some erosion of the canal banks.
15.00 ft: expect flooding of homes and other structures to begin along the Tualatin River from upstream of the City of Tualatin down to the confluence with the Willamette. Also expect several road closures in the area.
14.50 ft: the Oswego canal inlet gate will likely be overtopped. Expect several road closures in the area. Flooding of homes and other structures along the Tualatin River from upstream of the City of Tualatin down to the confluence with the Willamette will also begin.
13.50 ft: expect lowland flooding. Numerous secondary roads upstream of Tualatin are likely to be closed, and low-lying structures along the Tualatin from the City of Tualatin downstream to the confluence with the Willamette are threatened by flood waters.
11.00 ft: some localized lowland flooding is possible.
2.92 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Rank	Level	Date
1	18.32 ft	February 10, 1996
2	16.31 ft	January 18, 1974
3	16.31 ft	January 2, 1997
4	16.27 ft	December 23, 1955
5	15.40 ft	January 28, 1964
6	14.42 ft	March 1, 1999
7	14.36 ft	February 20, 1949
8	14.18 ft	January 24, 1972
9	14.16 ft	December 17, 1977
10	13.47 ft	January 13, 2006

Weather at the gauge

No rain in the last 3 days.

19 Mon 62° 47° – Wind 6 mph

20 Tue 76° 48° – Wind 11 mph

21 Wed 72° 52° – Wind 4 mph

22 Thu 65° 51° – Wind 10 mph

23 Fri 60° 48° – Wind 5 mph

24 Sat 60° 44° – Wind 4 mph

25 Sun 54° 45° – Wind 4 mph

Forecast: Open-Meteo

Sunrise 07:33 AM Sunset 06:20 PM Daylight 10 hr, 47 min First quarter 57%

Map

Other gauges on the Tualatin River

Gauge	Level	Compared with normal	24 hours	Distance
Tualatin River near DilleyRiver gauge, Tualatin River	11.06 ft	Below flood stage	+0.01 ft	23 mi
Tualatin River at Highway 219 near HillsboroRiver gauge, Tualatin River	121 cfs	Normal	−2.0 cfs	18 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Willamette River above Falls, at Oregon CityRiver gauge, Willamette River	56.03 ft	Normal	+0.08 ft	2.7 mi
Willamette River below Falls, at Oregon CityTidal gauge, Willamette River	4.38 ft	Low	+0.56 ft	3.2 mi
Clackamas River near Oregon CityRiver gauge, Clackamas River	22.89 ft	Below flood stage	+0.01 ft	5.2 mi
Fanno Creek at DurhamRiver gauge, Fanno Creek	1.86 ft	Below flood stage	+0.02 ft	5.3 mi
Tryon Creek near Lake OswegoRiver gauge, Tryon Creek	0.3 cfs	Very low	−0.2 cfs	5.5 mi
Johnson Creek at MilwaukieRiver gauge, Johnson Creek	23.72 ft	Below flood stage	±0	7 mi
Molalla River near CanbyRiver gauge, Molalla River	8.83 ft	Below flood stage	+0.04 ft	7 mi
Crystal Springs Creek at Bybee St, PortlandRiver gauge, Crystal Springs Creek	13.9 cfs	Normal	+0.4 cfs	9 mi

Questions and answers

What is flood stage for the Tualatin River at West Linn?

The official flood stage is 13.50 ft. The level is currently 10.58 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Tualatin River at West Linn today?

On Oct 19, 2026, 12:30 AM PDT, the water level was 2.92 ft. Steady over the last 24 hours.

Is Tualatin River at West Linn rising or falling?

Steady over the last 24 hours.

Is the level of Tualatin River at West Linn normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Tualatin River at West Linn?

The highest level on record is 18.32 ft on February 10, 1996.

Is Tualatin River at West Linn expected to rise?

The forecast expects the river to fall to 2.80 ft by Saturday, October 24 at 11:00 AM.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:14207500 (Agency page)
Coordinates: 45.35068, -122.67620 (WGS84)
Vertical datum: NGVD29
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	2.92 ft	2026-10-19 07:30	Provisional
Flow	218 cfs	2026-10-19 07:30	Provisional

Download

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How to cite

U.S. Geological Survey: Tualatin River at West Linn (usgs:14207500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/oregon/tualatin-river-at-west-linn

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer