North Fork Stillaguamish River near Arlington, WA
North Cascades & Puget Sound · USGS gauge 12167000 · Updated Oct 24, 2:37 PM PDT · USGS data, provisional
Reading time: Oct 24, 2:15 PM 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)
- 569–2,480 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 PM 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 569 to 2,480 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.
Quick answers
Is the North Fork Stillaguamish River near Arlington fishable today?
Flowcast's status for the North Fork Stillaguamish River near Arlington is “Too low”: flow is 177 cfs, well below normal for the date, at the 1st percentile for this date (as of Oct 24, 2:15 PM PDT). That describes flow only. It says nothing about water clarity, temperature, fish activity, access or fishing regulations.
What is the current flow of the North Fork Stillaguamish River near Arlington?
177 cubic feet per second at USGS gauge 12167000 as of Oct 24, 2:15 PM PDT, provisional data.
Is the North Fork Stillaguamish River near Arlington too high or too low right now?
It is on the low side: below the typical range for the date (569 to 2,480 cfs).
Is the North Fork Stillaguamish River near Arlington rising or falling?
Over the last 24 hours the flow has been steady (-3.8%).
What is a normal flow for the North Fork Stillaguamish River near Arlington in October?
For this date (give or take 7 days) the median is 1,160 cfs and the middle half of days runs 569 to 2,480 cfs, over 99 years of USGS record.
7-day trend
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 cfs | Percentile | Status that day |
|---|---|---|---|
| Sun Oct 18 | 240 | 9th | Too low |
| Mon Oct 19 | 216 | 5th | Too low |
| Tue Oct 20 | 200 | 3rd | Too low |
| Wed Oct 21 | 192 | 2nd | Too low |
| Thu Oct 22 | 187 | 2nd | Too low |
| Fri Oct 23 | 182 | 1st | Too low |
| Sat Oct 24 (so far) | 178 | 1st | Too low |
Seasonal context
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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Official resources
- USGS site page for gauge 12167000 (USGS: live readings, history, station details)
- Washington fishing regulations (WDFW)
- Emergency fishing rule changes (WDFW)
- WDFW fishing and stocking reports
Agency notices that mention this river
- “Stillaguamish River to close to all fishing Oct. 9” (WDFW emergency rules)
Copied from the WDFW emergency rules page as of Oct 24, 2:40 PM PDT. They match on the river's name only and may concern a different stretch. Open the page for the details.
Links go to the agencies' own websites and were checked as working. Flowcast does not summarize fishing or boating rules: regulations and closures change, and the agency pages are the authority.
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
Notes: Rain-driven; rises and falls quickly. (Hand-written general note, not from USGS data.)
Nearby gauges
- Skagit River near Mount Vernon, WA Fishable/Floatable 6,940 cfs · about 18 mi away (straight line)
- Sauk River near Sauk, WA Too low 634 cfs · about 25 mi away (straight line)
- Skagit River at Marblemount, WA Fishable/Floatable 3,470 cfs · about 34 mi away (straight line)
- Skykomish River near Gold Bar, WA Too low 398 cfs · about 34 mi away (straight line)
- Cascade River at Marblemount, WA Too low 150 cfs · about 34 mi away (straight line)
- Snoqualmie River near Carnation, WA Too low 451 cfs · about 42 mi away (straight line)
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