Cascade River at Marblemount water level

Name: Cascade River at Marblemount 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, Cascade River, Washington, United States

Directions

Very low for mid-October

Water level

11.51ft Down 0.28 ft over the last 24 hours

Measured Oct 18, 2026, 12:45 PM PDT (60 min ago)

Flow: 208 cfs
Water temperature: 48 °F

History

7 days

Water level

What this means

At 11.51 ft, the Cascade River at Marblemount is far below normal for mid-October.

The level is falling, down 0.28 ft over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 11.33 ft and 11.88 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 48 °F.

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

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: 0.28 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 60° 41° – Wind 5 mph

19 Mon 61° 44° – Wind 5 mph

20 Tue 70° 46° – Wind 7 mph

21 Wed 73° 51° – Wind 6 mph

22 Thu 64° 46° – Wind 7 mph

23 Fri 59° 41° – Wind 5 mph

24 Sat 58° 43° 0.05 in, 22% Wind 4 mph

Forecast: Open-Meteo

Sunrise 07:31 AM Sunset 06:12 PM Daylight 10 hr, 41 min First quarter 52%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Skagit River at MarblemountRiver gauge, Skagit River	3.37 ft	Normal	−0.18 ft	0.8 mi
Skagit River above Diobsud Creek near MarblemountRiver gauge, Skagit River	2.32 ft	Very low	−0.12 ft	2.4 mi
Skagit River at CorkindaleRiver gauge, Skagit River	2.14 ft	Low	−0.04 ft	2.7 mi
Bacon Creek below Oakes Creek near MarblemountRiver gauge, Bacon Creek	4.22 ft	Normal	−0.02 ft	5.5 mi
Skagit River below Damnation Creek near MarblemountRiver gauge, Skagit River	7.71 ft	High	+0.28 ft	8 mi
Sauk River near SaukRiver gauge, Sauk River	2.58 ft	Very low	+0.13 ft	10 mi
Skagit River below Babcock Creek near NewhalemRiver gauge, Skagit River	28.61 ft	High	−0.07 ft	11 mi
Skagit River at NewhalemRiver gauge, Skagit River	83.67 ft	High	+0.06 ft	13 mi

Questions and answers

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 Cascade River at Marblemount today?

On Oct 18, 2026, 12:45 PM PDT, the water level was 11.51 ft. Down 0.28 ft over the last 24 hours.

Is Cascade River at Marblemount rising or falling?

Down 0.28 ft over the last 24 hours.

Is the level of Cascade River at Marblemount normal?

Very low 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:12182500 (Agency page)
Coordinates: 48.52623, -121.41540 (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	11.51 ft	2026-10-18 19:45	Provisional
Flow	208 cfs	2026-10-18 19:45	Provisional
Water temperature	48 °F	2026-10-18 19:45	Provisional

Download

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How to cite

U.S. Geological Survey: Cascade River at Marblemount (usgs:12182500). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/cascade-river-at-marblemount

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