Siuslaw River near Mapleton water level

Name: Siuslaw River near Mapleton 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, Siuslaw River, Oregon, United States

Directions

Below flood stage

Water level

2.87ft Steady over the last 24 hours

Measured Oct 17, 2026, 06:00 AM PDT (1 hour ago)

Flow: 88.3 cfs
Water temperature: 54 °F

History

7 days

Water level Forecast Minor flood stage

The forecast expects the river to rise to 3.00 ft by Monday, October 26 at 05:00 AM. Issued Friday, October 16 at 08:20 AM by NOAA National Weather Service.

What this means

The gauge at Siuslaw River near Mapleton reads 2.87 ft, a normal level.

It is 15.13 ft below the flood stage of 18.00 ft.

It has barely moved over the past 24 hours. The forecast expects the river to rise to 3.00 ft by Monday, October 26 at 05:00 AM.

The water temperature at the gauge is 54 °F.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record: 30.21 ftFebruary 7, 1996
Forecast peak: 3.00 ftMonday, October 26 at 05:00 AM

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 18.00 ft, still 15.13 ft away.

What happens at each level

32.50 ft: the flow at this level is about 62,000 cfs and has a 1 percent chance of happening in a given year (aka 100-year flood).
30.60 ft: the flow at this level is about 56,000 cfs and has a 2 percent chance of happening in a given year (aka 50-year flood).
28.00 ft: expect major flooding along Riverview Avenue area and numerous homes and businesses in Mapleton. Flooding of roads adjacent to the Siuslaw River in the vicinity of Mapleton is likely. Flooding of Highways 126 and 36 will be significant.
26.00 ft: the flow at this level is 42,000 cfs and has a 10 percent chance of happening in a given year (aka 10-year flood).
25.00 ft: expect widespread flooding, including several homes and structures in low areas of Mapleton. Many sections of Highway 126 from Tiernan to Mapleton, along with Hwy 36 north of Mapleton begin to flood. Flooding may be exacerbated during high tide.
23.20 ft: the flow at this level is about 35,000 cfs and has a 20 percent chance of happening in a given year (aka 5-year flood).
22.00 ft: expect widespread flooding of low-lying land. Several homes and structures in low areas of Mapleton start to flood. Numerous rural roads along and near the Siuslaw River will likely be flooded, and water begins to cover the lower sections of Hwy 126 at this stage. Flooding may be exacerbated during high tide.
20.00 ft: expect water over East Mapleton Road. Flooding of some low-lying homes and structures begins. Flooding may be exacerbated by high tide.
19.10 ft: The flow at this level is about 24,600 cfs and has an annual chance of 50 percent (aka 2-year flood).
18.00 ft: expect minor flooding of low lying dairy land along with some structures right along the banks of the Siuslaw River in and near Mapleton.
2.87 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: 22 %.

Rank	Level	Date
1	30.21 ft	February 7, 1996
2	28.45 ft	January 21, 1972
3	28.28 ft	January 16, 1974
4	28.07 ft	January 19, 2012
5	28.00 ft	December 16, 1964
6	25.79 ft	December 28, 1998
7	25.73 ft	December 25, 1980
8	23.99 ft	December 13, 1977
9	23.98 ft	December 30, 2005
10	23.67 ft	December 6, 1981

Weather at the gauge

No rain in the last 3 days.

17 Sat 65° 50° – Wind 8 mph

18 Sun 63° 42° – Wind 8 mph

19 Mon 59° 44° – Wind 6 mph

20 Tue 65° 41° – Wind 4 mph

21 Wed 71° 43° – Wind 5 mph

22 Thu 61° 43° – Wind 10 mph

23 Fri 58° 40° – Wind 8 mph

Forecast: Open-Meteo

Sunrise 07:33 AM Sunset 06:30 PM Daylight 10 hr, 56 min First quarter 41%

Map

Other gauges on the Siuslaw River

Gauge	Level	Compared with normal	24 hours	Distance
Siuslaw River near AlmaRiver gauge, Siuslaw River	10.30 ft	No reference yet	+0.03 ft	17 mi
Siuslaw River at Highway 101 Bridge, at FlorenceEstuary gauge, Siuslaw River	9.92 ft	No reference yet	−0.15 ft	13 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
East Fork Lobster Creek near AlseaRiver gauge, East Fork Lobster Creek	1.2 cfs	Normal	±0	18 mi
Alsea River near TidewaterRiver gauge, Alsea River	1.12 ft	Below flood stage	±0	23 mi
Long Tom River near NotiRiver gauge, Long Tom River	15.2 cfs	Low	±0	23 mi
Long Tom River near AlvadoreRiver gauge, Long Tom River	409 cfs	Low	+171 cfs	29 mi
Long Tom River at MonroeRiver gauge, Long Tom River	4.98 ft	Below flood stage	+0.21 ft	34 mi
Umpqua River near ElktonRiver gauge, Umpqua River	2.85 ft	Below flood stage	±0	37 mi
Willamette River at HarrisburgRiver gauge, Willamette River	1.59 ft	Below flood stage	−0.01 ft	38 mi
Willamette River at EugeneRiver gauge, Willamette River	9.77 ft	Low	±0	40 mi

Questions and answers

What is flood stage for the Siuslaw River near Mapleton?

The official flood stage is 18.00 ft. The level is currently 15.13 ft below it.

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 Siuslaw River near Mapleton today?

On Oct 17, 2026, 06:00 AM PDT, the water level was 2.87 ft. Steady over the last 24 hours.

Is Siuslaw River near Mapleton rising or falling?

Steady over the last 24 hours.

Is the level of Siuslaw River near Mapleton normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Siuslaw River near Mapleton?

The highest level on record is 30.21 ft on February 7, 1996.

Is Siuslaw River near Mapleton expected to rise?

The forecast expects the river to rise to 3.00 ft by Monday, October 26 at 05:00 AM.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:14307620 (Agency page)
Coordinates: 44.06234, -123.88317 (WGS84)
Vertical datum: NGVD29
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	2.87 ft	2026-10-17 13:00	Provisional
Flow	88.3 cfs	2026-10-17 13:00	Provisional
Water temperature	54 °F	2026-10-17 13:00	Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

<iframe src="https://nivelmap.com/embed/5570?lang=en" width="360" height="230" style="border:0;max-width:100%" loading="lazy" title="Siuslaw River near Mapleton water level"></iframe>

How to cite

U.S. Geological Survey: Siuslaw River near Mapleton (usgs:14307620). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/united-states/oregon/siuslaw-river-near-mapleton

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