North Fork Stillaguamish River near Arlington, WA

North Cascades & Puget Sound · USGS gauge 12167000 · Updated Oct 24, 3:19 AM PDT · USGS data, provisional

Too low177 cfs● steady (-4% in 24 h)

Reading time: Oct 24, 2:15 AM PDT · Provisional data

Flow is far below normal for the date. Expect shallow riffles and slower water; some stretches may be hard to float and fish can be stressed by low flows. Check local reports for the specific stretch.

Vs. normal for this date
1st percentile
Typical range (25th–75th)
570–2,482 cfs
Median for this date
1,160 cfs
7-day low / high
177 / 260 cfs

Plain-language explanation

North Fork Stillaguamish River near Arlington is flowing at 177 cubic feet per second (cfs) as of Oct 24, 2:15 AM PDT. That is among the lowest flows on record for this time of year: lower than about 99% of the daily flows this gauge has recorded for this date (give or take 7 days) over 99 years of record (1928–2026).

The middle half of those historical flows runs from 570 to 2,482 cfs, with a median of 1,160 cfs; the lowest 10% of days are at or below 316 cfs and the highest 10% at or above 4,410 cfs.

Over the last 24 hours the flow has been steady (-3.8%). In the last 7 days it ranged from 177 to 260 cfs.

Why this status: Flow is at or below the seasonal 10th percentile and in the lower 40% of all days on record.

7-day trend

165192218245272Sun 10/18Mon 10/19Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24

Hourly flow in cfs, Pacific time. The shaded band is the typical range (25th–75th percentile) for this date, shown when it falls within the chart.

Day (Pacific)Mean cfsPercentileStatus that day
Sun Oct 182409thToo low
Mon Oct 192165thToo low
Tue Oct 202003rdToo low
Wed Oct 211922ndToo low
Thu Oct 221872ndToo low
Fri Oct 231821stToo low
Sat Oct 24 (so far)1801stToo low

Seasonal context

1002005001,0002,0005,00010,000JanFebMarAprMayJunJulAugSepOctNovDec

Shaded band: 10th–90th percentile of daily flows through the year; dashed line: median. Log scale. Dot: today's flow. Based on 99 years of USGS daily data (1928–2026).

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About this gauge

USGS site
USGS-12167000
USGS name
Nf Stillaguamish River Near Arlington, Wa
Drainage area
262 sq mi
Location
48.2615, -122.0476
Record in this analysis
1928–2026

Typical uses

steelheadkayaking

Notes: Rain-driven; rises and falls quickly. (Hand-written general note, not from USGS data.)

Data from the U.S. Geological Survey (USGS). Readings are provisional and subject to revision. Flowcast statuses are automated comparisons with each gauge's own history, not safety ratings or fishing reports. Check local conditions, weather, regulations and closures before you go. Rivers can change quickly.

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