Snohomish River near Monroe water level

Name: Snohomish River near Monroe 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, Snohomish River, Washington, United States

Directions

Very low for mid-October

Water level

0.38ft Steady over the last 24 hours

Measured Oct 18, 2026, 03:15 PM PDT (57 min ago)

Flow: 1,800 cfs

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %) Forecast Minor flood stage

The forecast expects the river to fall to 0.13 ft by Tuesday, October 27 at 05:00 AM. Issued Sunday, October 18 at 08:39 AM by NOAA National Weather Service.

What this means

Low water at Snohomish River near Monroe: the gauge reads 0.38 ft, far below normal for mid-October.

The median for mid-October is 2.50 ft, based on 26 years of readings, so the river stage is 2.12 ft below typical. It is 14.62 ft below the flood stage of 15.00 ft. On the same day last year the reading was 0.24 ft, a difference of +0.14 ft.

It has barely moved over the past 24 hours. The forecast expects the river to fall to 0.13 ft by Tuesday, October 27 at 05:00 AM. Without real rain upstream, that is unlikely to change quickly. The 30-day range is 0.02 ft – 1.98 ft.

Compared with 26 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 2.50 ft2.12 ft below the median for this date
Normal for this date: 0.94 ft – 5.18 ft8 years in 10 fall in this range (26 years of records)
Same day last year: 0.24 ft+0.14 ft
Lowest and highest in 30 days: 0.02 ft – 1.98 ft
Lowest and highest in 12 months: −0.02 ft – 23.26 ft
Highest on record: 25.30 ftNovember 25, 1990
Forecast peak: 0.37 ftSunday, October 18 at 11:00 AM

Paddling and fishing conditions

At low levels, plan for shorter paddling trips and expect to walk your boat through a few shoals.

For reference, flood stage is 15.00 ft.

What happens at each level

22.00 ft: the Snohomish River will cause severe flooding...with deep and swift flood waters inundating farm land...residential areas...and roads. Levees could suffer overtopping and major damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 22 feet at this location corresponds to Phase 4 in the Snohomish County Flood Warning System.
21.00 ft: Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. The Snohomish River stage at this location corresponds to Phase 4 in the Snohomish County Flood Warning System.
20.00 ft: the Snohomish River will cause severe flooding in the valley. The river will flood many homes...cover much of the farmlands...and close many roads. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 20 feet at this location corresponds to Phase 3 in the Snohomish County Flood Warning System.
17.00 ft: the Snohomish River will cause major flooding...inundating farm land...roads...and some residential areas. Levees will likely suffer damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 17 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System.
16.00 ft: the Snohomish River will flood several roads and much of the low pasture land in the river valley. A stage of 16 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System.
15.00 ft: the Snohomish River will cause minor flooding of low pasture lands and several roads near the river. A stage of 15 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System.
14.00 ft: feet...the Snohomish River will locally spill over its banks into low pasture lands along the river.
0.38 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: 37 %.

Rank	Level	Date
1	25.30 ft	November 25, 1990
2	24.55 ft	December 12, 2025
3	24.12 ft	January 8, 2009
4	24.10 ft	November 30, 1995
5	23.54 ft	November 7, 2006
6	22.92 ft	December 4, 1975
7	21.65 ft	November 10, 1990
8	21.53 ft	February 9, 1996
9	20.68 ft	November 24, 1986
10	19.74 ft	December 3, 1977

Weather at the gauge

Rain in the last 3 days: 0.04 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 58° 39° – Wind 7 mph

19 Mon 60° 44° – Wind 5 mph

20 Tue 61° 41° – Wind 7 mph

21 Wed 67° 43° – Wind 5 mph

22 Thu 60° 43° – Wind 7 mph

23 Fri 56° 38° – Wind 4 mph

24 Sat 59° 40° – Wind 4 mph

Forecast: Open-Meteo

Sunrise 07:32 AM Sunset 06:16 PM Daylight 10 hr, 43 min First quarter 53%

Map

Other gauges on the Snohomish River

Gauge	Level	Compared with normal	24 hours	Distance
Snohomish River at SnohomishRiver gauge, Snohomish River	14.78 ft	High	+0.90 ft	6.0 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Pilchuck River near SnohomishRiver gauge, Pilchuck River	10.02 ft	Normal	+0.10 ft	7 mi
Sultan River below Powerplant near SultanRiver gauge, Sultan River	5.10 ft	Low	+0.01 ft	12 mi
Snoqualmie River near CarnationRiver gauge, Snoqualmie River	44.65 ft	Very low	+0.13 ft	13 mi
Tolt River near CarnationRiver gauge, Tolt River	4.51 ft	Low	−0.14 ft	14 mi
Sultan River below Diversion Dam near SultanRiver gauge, Sultan River	26.15 ft	Low	−0.01 ft	15 mi
Sf Tolt River below Regulating Basin near CarnationRiver gauge, Sf Tolt River	3.12 ft	Very low	−0.03 ft	15 mi
Nf Tolt River above Yellow Creek near CarnationRiver gauge, Nf Tolt River	54.2 cfs	Low	−27.0 cfs	16 mi
Skykomish River near Gold BarRiver gauge, Skykomish River	4.45 ft	Normal	+0.10 ft	18 mi

Questions and answers

Is the Snohomish River near Monroe higher than last year?

Yes, it is 0.14 ft higher than on the same day last year, when the reading was 0.24 ft.

What is flood stage for the Snohomish River near Monroe?

The official flood stage is 15.00 ft. The level is currently 14.62 ft below it.

What is a normal level for the Snohomish River near Monroe in mid-October?

The median for mid-October is 2.50 ft. In 8 years out of 10 the reading falls between 0.94 ft and 5.18 ft, based on 26 years of records.

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 Snohomish River near Monroe today?

On Oct 18, 2026, 03:15 PM PDT, the water level was 0.38 ft. Steady over the last 24 hours.

Is Snohomish River near Monroe rising or falling?

Steady over the last 24 hours. Down 0.34 ft over the last 7 days.

Is the level of Snohomish River near Monroe normal?

Very low for mid-October. Compared with 26 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:12150800 (Agency page)
Coordinates: 47.83093, -122.04846 (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	0.38 ft	2026-10-18 22:15	Provisional
Flow	1,800 cfs	2026-10-18 22:15	Provisional

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How to cite

U.S. Geological Survey: Snohomish River near Monroe (usgs:12150800). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/snohomish-river-near-monroe

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