Rivermatics

USGS Streamgage 12026150

Skookumchuck River below Bldy Run Creek near Centralia, WA

Skookumchuck River below Bldy Run Creek near Centralia, WA is USGS streamgage 12026150 in Washington, monitoring river discharge in hydrologic subbasin 17100103. It sits on the Skookumchuck River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 66 square miles. Discharge records at this site go back to 1939. Typical flow runs near 102.5 cfs in July and 257.1 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Washington
Drainage area
66 sq mi
Gauge elevation
331 ft
Subbasin (HUC-8)
17100103
Coordinates
46.7901, -122.7354
USGS site number
12026150
Records begin
1939-12-15 (87 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Skookumchuck River below Bldy Run Creek near Centralia, WA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
107 109 110
107 110 125
106 109 125
106 109 127
105 109 131
105 109 135
105 109 135
104 109 137
104 109 139
104 109 139
103 110 139
102 109 130
102 110 128
102 110 131

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 54 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 144.5 382.3 1,091.1
February 141.8 329.4 862.8
March 114.3 308.9 789.7
April 138.6 257.1 575.7
May 107.9 168.4 304.9
June 89.4 120.5 222.7
July 79.4 102.5 138.6
August 67.4 95.3 122.5
September 82.7 133.1 153.7
October 93.4 133.4 173.1
November 99.5 175.9 438.3
December 124.2 324.9 1,051.6

All values in cubic feet per second (cfs).

Common questions

When does Skookumchuck River below Bldy Run Creek near Centralia, WA normally run highest?
January, on the long-term record. The median daily flow that month is about 382.3 cfs, against 95.3 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Skookumchuck River below Bldy Run Creek near Centralia, WA?
It depends on the month. In January, half of days historically fall near 382.3 cfs, with the middle 80% of days between 144.5 and 1,091.1 cfs. The month-by-month table on this page gives the full range.
How long has Skookumchuck River below Bldy Run Creek near Centralia, WA been measured?
Discharge records at USGS site 12026150 begin in 1939, about 87 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Skookumchuck River below Bldy Run Creek near Centralia, WA?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Skookumchuck River below Bldy Run Creek near Centralia, WA?
The gauge sits at 46.7901, -122.7354, in Washington, in hydrologic subbasin 17100103, at an elevation of about 331 feet, draining roughly 66 square miles.
Can I use Skookumchuck River below Bldy Run Creek near Centralia, WA data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Skookumchuck River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Skookumchuck River in full.

Other gauges in this subbasin