Siuslaw River near Mapleton, OR
Oregon Coast · USGS gauge 14307620 · Updated Oct 24, 2:37 PM PDT · USGS data, provisional
Reading time: Oct 24, 2:00 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
- 2nd percentile
- Typical range (25th–75th)
- 142–601 cfs
- Median for this date
- 248 cfs
- 7-day low / high
- 71.3 / 90.6 cfs
Plain-language explanation
Siuslaw River near Mapleton is flowing at 73.3 cubic feet per second (cfs) as of Oct 24, 2:00 PM PDT. That is among the lowest flows on record for this time of year: lower than about 98% of the daily flows this gauge has recorded for this date (give or take 7 days) over 53 years of record (1967–2026).
The middle half of those historical flows runs from 142 to 601 cfs, with a median of 248 cfs; the lowest 10% of days are at or below 97.1 cfs and the highest 10% at or above 1,244 cfs.
Over the last 24 hours the flow has been steady (-2.8%). In the last 7 days it ranged from 71.3 to 90.6 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 Siuslaw River near Mapleton fishable today?
Flowcast's status for the Siuslaw River near Mapleton is “Too low”: flow is 73.3 cfs, well below normal for the date, at the 2nd percentile for this date (as of Oct 24, 2:00 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 Siuslaw River near Mapleton?
73.3 cubic feet per second at USGS gauge 14307620 as of Oct 24, 2:00 PM PDT, provisional data.
Is the Siuslaw River near Mapleton too high or too low right now?
It is on the low side: below the typical range for the date (142 to 601 cfs).
Is the Siuslaw River near Mapleton rising or falling?
Over the last 24 hours the flow has been steady (-2.8%).
What is a normal flow for the Siuslaw River near Mapleton in October?
For this date (give or take 7 days) the median is 248 cfs and the middle half of days runs 142 to 601 cfs, over 53 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 | 88.3 | 9th | Too low |
| Mon Oct 19 | 87.4 | 9th | Too low |
| Tue Oct 20 | 85.3 | 6th | Too low |
| Wed Oct 21 | 80.1 | 5th | Too low |
| Thu Oct 22 | 78.3 | 4th | Too low |
| Fri Oct 23 | 75.9 | 3rd | Too low |
| Sat Oct 24 (so far) | 73.1 | 2nd | 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 53 years of USGS daily data (1967–2026).
Guide, outfitter or fly shop on this river? List your service on Flowcast (free early listings, launching).
Official resources
- USGS site page for gauge 14307620 (USGS: live readings, history, station details)
- Oregon fishing regulations (ODFW)
- Northwest Zone regulations (ODFW)
- In-season Oregon regulation updates (ODFW)
- ODFW Recreation Report (fishing reports)
- Northwest Zone fishing report (ODFW)
- Oregon angling zones and fish district contacts (ODFW)
Agency notices
ODFW's in-season regulation updates page currently mentions “Siuslaw River” 3 times. Read the section for your stretch before you go.
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-14307620
- USGS name
- Siuslaw River Near Mapleton, Or
- Drainage area
- 588 sq mi
- Location
- 44.0623, -123.8832
- Record in this analysis
- 1967–2026
Nearby gauges
- Alsea River near Tidewater, OR Too low 64.9 cfs · about 23 mi away (straight line)
- Umpqua River near Elkton, OR Too low 962 cfs · about 37 mi away (straight line)
- Siletz River at Siletz, OR Too low 60.5 cfs · about 45 mi away (straight line)
- Middle Fork Willamette River near Dexter, OR Too low 1,240 cfs · about 53 mi away (straight line)
- North Umpqua River at Winchester, OR Too low 752 cfs · about 60 mi away (straight line)
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