Rivermatics

USGS Streamgage 12024000

South Fork Newaukum River near Onalaska, WA

South Fork Newaukum River near Onalaska, WA is USGS streamgage 12024000 in Washington, monitoring river discharge in hydrologic subbasin 17100103. It drains a watershed of about 42 square miles. Discharge records at this site go back to 1944. Typical flow runs near 44.3 cfs in July and 215.5 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Washington
Drainage area
42 sq mi
Gauge elevation
559 ft
Subbasin (HUC-8)
17100103
Coordinates
46.57566, -122.68512
USGS site number
12024000
Records begin
1944-07-01 (82 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 81 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 129.1 320.1 916.8
February 136.8 276.6 676
March 127.8 259.3 559.5
April 114.2 215.5 437.7
May 82.4 127 269.6
June 48 74.2 158.7
July 31.2 44.3 87.7
August 22.7 33.9 64.2
September 22.3 36.6 115.5
October 24.4 62.7 255.5
November 74.5 213.9 681
December 119.9 280 763.1

All values in cubic feet per second (cfs).

Common questions

When does South Fork Newaukum River near Onalaska, WA normally run highest?
January, on the long-term record. The median daily flow that month is about 320.1 cfs, against 33.9 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 South Fork Newaukum River near Onalaska, WA?
It depends on the month. In January, half of days historically fall near 320.1 cfs, with the middle 80% of days between 129.1 and 916.8 cfs. The month-by-month table on this page gives the full range.
How long has South Fork Newaukum River near Onalaska, WA been measured?
Discharge records at USGS site 12024000 begin in 1944, about 82 years, covering roughly 5,262 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is South Fork Newaukum River near Onalaska, WA?
The gauge sits at 46.57566, -122.68512, in Washington, in hydrologic subbasin 17100103, at an elevation of about 559 feet, draining roughly 42 square miles.
Can I use South Fork Newaukum River near Onalaska, 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.

Other gauges in this subbasin