Sf Tolt River below Regulating Basin near Carnation water level

Name: Sf Tolt River below Regulating Basin near Carnation 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, Sf Tolt River, Washington, United States

Directions

Very low for mid-October

Water level

3.12ft Steady over the last 24 hours

Measured Oct 18, 2026, 03:00 PM PDT (1 hour ago)

Flow: 60.1 cfs
Water temperature: 52 °F

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

At 3.12 ft, the Sf Tolt River below Regulating Basin near Carnation is far below normal for mid-October.

That puts it 0.20 ft below the median of 3.32 ft for mid-October, based on 34 years of readings. A year ago it stood at 3.09 ft (+0.03 ft).

The level has held steady over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 3.11 ft and 3.25 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that. The sensor also reports a water temperature of 52 °F.

Compared with 34 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 3.32 ft0.20 ft below the median for this date
Normal for this date: 3.17 ft – 3.64 ft8 years in 10 fall in this range (34 years of records)
Same day last year: 3.09 ft+0.03 ft
Lowest and highest in 30 days: 3.11 ft – 3.25 ft
Lowest and highest in 12 months: 3.11 ft – 6.78 ft

What the stage means on the water

Low water means more dragging on shallow riffles and slower floats. Fish crowd into the deeper runs, and warm, low water stresses them, so play and release them quickly.

Weather at the gauge

Rain in the last 3 days: 0.24 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 55° 39° – Wind 5 mph

19 Mon 56° 44° – Wind 4 mph

20 Tue 64° 43° – Wind 5 mph

21 Wed 67° 48° – Wind 5 mph

22 Thu 57° 44° – Wind 5 mph

23 Fri 49° 40° 0.06 in, 31% Wind 5 mph

24 Sat 49° 39° 0.32 in, 33% Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:31 AM Sunset 06:15 PM Daylight 10 hr, 44 min First quarter 53%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Tolt River near CarnationRiver gauge, Tolt River	4.51 ft	Low	−0.14 ft	1.7 mi
Nf Tolt River above Yellow Creek near CarnationRiver gauge, Nf Tolt River	54.2 cfs	Low	−27.0 cfs	2.6 mi
South Fork Tolt River near CarnationRiver gauge, South Fork Tolt River	1.87 ft	Very low	−0.01 ft	3.5 mi
Nf Snoqualmie River near Snoqualmie FallsRiver gauge, Nf Snoqualmie River	2.28 ft	Low	+0.03 ft	7 mi
Snoqualmie River near CarnationRiver gauge, Snoqualmie River	44.65 ft	Very low	+0.13 ft	7 mi
Phelps Creek below Unnamed Tributary near IndexRiver gauge, Phelps Creek	5.88 ft	Low	+0.07 ft	9 mi
South Fork Tolt River near IndexRiver gauge, South Fork Tolt River	0.78 ft	Low	−0.05 ft	9 mi
Snoqualmie River near SnoqualmieRiver gauge, Snoqualmie River	2.76 ft	Low	+0.17 ft	11 mi

Questions and answers

How does the Sf Tolt River below Regulating Basin near Carnation compare with last year?

It is 0.03 ft higher than on the same day last year, when the reading was 3.09 ft.

What is a normal level for the Sf Tolt River below Regulating Basin near Carnation in mid-October?

The median for mid-October is 3.32 ft. In 8 years out of 10 the reading falls between 3.17 ft and 3.64 ft, based on 34 years of records.

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 Sf Tolt River below Regulating Basin near Carnation today?

On Oct 18, 2026, 03:00 PM PDT, the water level was 3.12 ft. Steady over the last 24 hours.

Is Sf Tolt River below Regulating Basin near Carnation rising or falling?

Steady over the last 24 hours. Steady over the last 7 days.

Is the level of Sf Tolt River below Regulating Basin near Carnation normal?

Very low for mid-October. Compared with 34 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.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:12148300 (Agency page)
Coordinates: 47.69677, -121.78734 (WGS84)
Vertical datum: NAVD88
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	3.12 ft	2026-10-18 22:00	Provisional
Flow	60.1 cfs	2026-10-18 22:00	Provisional
Water temperature	52 °F	2026-10-18 22:00	Provisional

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How to cite

U.S. Geological Survey: Sf Tolt River below Regulating Basin near Carnation (usgs:12148300). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/sf-tolt-river-below-regulating-basin-near-carnation

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