Rivermatics

USGS Streamgage 12115700

Boulder Creek near Cedar Falls, WA

Boulder Creek near Cedar Falls, WA is USGS streamgage 12115700 in Washington, monitoring river discharge in hydrologic subbasin 17110012. It drains a watershed of about 5 square miles. Discharge records at this site go back to 1983. Typical flow runs near 2.8 cfs in July and 29 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Washington
Drainage area
5 sq mi
Gauge elevation
1,620 ft
Subbasin (HUC-8)
17110012
Coordinates
47.36622, -121.69288
USGS site number
12115700
Records begin
1983-03-01 (43 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 43 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 7.2 24.5 92.1
February 6.8 18.3 67.4
March 6.9 21.3 59.5
April 11.9 29 69.8
May 8 27.4 63.4
June 2.2 12.9 42.2
July 0.3 2.8 10.9
August 0 0.4 3.2
September 0 0.4 7.3
October 0.3 6 37.9
November 5.4 25.4 93.3
December 6.7 20.8 82.5

All values in cubic feet per second (cfs).

Common questions

When does Boulder Creek near Cedar Falls, WA normally run highest?
April, on the long-term record. The median daily flow that month is about 29 cfs, against 0.4 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 Boulder Creek near Cedar Falls, WA?
It depends on the month. In January, half of days historically fall near 24.5 cfs, with the middle 80% of days between 7.2 and 92.1 cfs. The month-by-month table on this page gives the full range.
How long has Boulder Creek near Cedar Falls, WA been measured?
Discharge records at USGS site 12115700 begin in 1983, about 43 years, covering roughly 9,048 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Boulder Creek near Cedar Falls, WA?
The gauge sits at 47.36622, -121.69288, in Washington, in hydrologic subbasin 17110012, at an elevation of about 1,620 feet, draining roughly 5 square miles.
Can I use Boulder Creek near Cedar Falls, 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