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Cowlitz River near Kosmos water level

River gauge, Cowlitz River, Washington, United States

Directions

Very low for mid-October

Flow

443cfs Down 75.0 cfs over the last 24 hours

1,250 2,500 3,750

History

2,0004,000cfsOct 16Oct 16Oct 17Oct 18Oct 192,0004,000cfsOct 16Oct 17Oct 19
Flow Normal range (10–90 %)

What this means

The Cowlitz River near Kosmos is running far below normal at 443 cfs.

The median for mid-October is 1,335 cfs, based on 78 years of readings, so the flow is 892.0 cfs below typical.

It has dropped 75.0 cfs over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. In the last month it has stayed between 427 cfs and 533 cfs.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 78 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
1,335 cfs892 cfs below the median for this date
Normal for this date
730 cfs – 3,922 cfs8 years in 10 fall in this range (78 years of records)

Floating and fishing near Cowlitz River near Kosmos

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Weather at the gauge

Rain in the last 3 days: 0.19 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 63° 39° – Wind 8 mph
19 Mon 61° 47° – Wind 8 mph
20 Tue 71° 46° – Wind 6 mph
21 Wed 74° 49° – Wind 6 mph
22 Thu 58° 44° 0.02 in, 24% Wind 7 mph
23 Fri 53° 41° – Wind 6 mph
24 Sat 68° 39° – Wind 5 mph

Forecast: Open-Meteo

Sunrise 07:32 AM Sunset 06:16 PM Daylight 10 hr, 44 min First quarter 55%

Map

Other gauges on the Cowlitz River

Gauge Level Compared with normal 24 hours Distance
Cowlitz River at PackwoodRiver gauge, Cowlitz River 0.81 ft Very low −0.05 ft 23 mi
Cowlitz River at RandleRiver gauge, Cowlitz River 3.69 ft Normal ±0 9 mi
Cowlitz River below Mayfield DamRiver gauge, Cowlitz River 10.70 ft Normal +0.03 ft 24 mi
Cowlitz River at Castle RockRiver gauge, Cowlitz River 33.71 ft High +0.05 ft 41 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Cispus River above Yellowjacket Creek near RandleRiver gauge, Cispus River 12.83 ft Normal ±0 13 mi
Tilton River above Bear Canyon Creek near CinebarRiver gauge, Tilton River 2.23 ft Low ±0 19 mi
Mineral Creek near MineralRiver gauge, Mineral Creek 19.9 cfs Very low +1.0 cfs 19 mi
Nisqually River near NationalRiver gauge, Nisqually River 4.04 ft Normal −0.12 ft 20 mi
Nf Toutle River below Srs near Kid ValleyRiver gauge, Nf Toutle River 156 cfs Very low +11.0 cfs 23 mi
Muddy River below Clear Creek near CougarRiver gauge, Muddy River 13.76 ft Very low ±0 27 mi
Nisqually River at La GrandeRiver gauge, Nisqually River 4.23 ft Normal −0.01 ft 28 mi

Questions and answers

What is a normal level for the Cowlitz River near Kosmos in mid-October?

The median for mid-October is 1,335 cfs. In 8 years out of 10 the reading falls between 730 cfs and 3,922 cfs, based on 78 years of records.

What is the water level of Cowlitz River near Kosmos today?

On Oct 18, 2026, 06:30 PM PDT, the flow was 443 cfs. Down 75.0 cfs over the last 24 hours.

Is Cowlitz River near Kosmos rising or falling?

Down 75.0 cfs over the last 24 hours.

Is the level of Cowlitz River near Kosmos normal?

Very low for mid-October. Compared with 78 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:14233500 (Agency page)
Coordinates
46.46622, -122.10899 (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

ParameterLast valueTime (UTC)Quality
Flow 443 cfs 2026-10-19 01:30 Provisional

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How to cite

U.S. Geological Survey: Cowlitz River near Kosmos (usgs:14233500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/washington/cowlitz-river-near-kosmos

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