Nivelmap
EN

How to read levelsSources and methods

North America

Western Europe

Central Europe

Mediterranean

Nordic countries

Columbia Slough at Portland water level

Tidal gauge, Columbia Slough, Oregon, United States

Directions

Very high for mid-October

Water level

2.78ft Up 0.61 ft over the last 24 hours

Flow
209 cfs
1 3 4 5

History

123ftOct 16Oct 16Oct 17Oct 18Oct 19123ftOct 16Oct 17Oct 19
Water level

What this means

The gauge at Columbia Slough at Portland shows 2.78 ft, well above normal for mid-October.

The water is rising: up 0.61 ft over the past 24 hours. If the rise continues, low-lying paths and riverside parking can go under water. Over the past 30 days it has moved between 0.47 ft and 4.08 ft.

Compared with 5 years of daily readings for this time of year. How to read levels

High water at Columbia Slough at Portland

The National Weather Service splits flooding into minor, moderate and major flood stage, each tied to what starts to go under water at this particular gauge. Minor flooding usually means low roads, parks and farmland; major flooding reaches homes and businesses.

Keep children and dogs well back from the edge, and stay off flooded footpaths and towpaths.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:33 AM Sunset 06:20 PM Daylight 10 hr, 46 min First quarter 63%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Columbia River at VancouverTidal gauge, Columbia River 2.03 ft Normal +0.91 ft 4.5 mi
Willamette River at PortlandTidal gauge, Willamette River 2.21 ft Below flood stage +0.91 ft 10 mi
Fanno Creek at 56th Ave, at PortlandRiver gauge, Fanno Creek 8.35 ft Below flood stage +0.01 ft 11 mi
Crystal Springs Creek at Bybee St, PortlandRiver gauge, Crystal Springs Creek 14.0 cfs Normal +0.1 cfs 13 mi
Johnson Creek at MilwaukieRiver gauge, Johnson Creek 23.76 ft Below flood stage +0.03 ft 14 mi
Tualatin River at Highway 219 near HillsboroRiver gauge, Tualatin River 122 cfs Normal ±0 15 mi
Tryon Creek near Lake OswegoRiver gauge, Tryon Creek 0.5 cfs Very low −0.4 cfs 15 mi
Ef Dairy Creek above Murtaugh Creek near Meacham CornerRiver gauge, Ef Dairy Creek 7.1 cfs Very low ±0 15 mi

Questions and answers

What is the water level of Columbia Slough at Portland today?

On Oct 19, 2026, 03:20 PM PDT, the water level was 2.78 ft. Up 0.61 ft over the last 24 hours.

Is Columbia Slough at Portland rising or falling?

Up 0.61 ft over the last 24 hours.

Is the level of Columbia Slough at Portland normal?

Very high for mid-October. Compared with 5 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:14211820 (Agency page)
Coordinates
45.63901, -122.76315 (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

ParameterLast valueTime (UTC)Quality
Water level 2.78 ft 2026-10-19 22:20 Provisional
Flow 209 cfs 2026-10-19 22:20 Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

How to cite

U.S. Geological Survey: Columbia Slough at Portland (usgs:14211820). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/oregon/columbia-slough-at-portland

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