USGS Streamgage 12039510
Cook Creek below Hatchery near Quinault, WA
Cook Creek below Hatchery near Quinault, WA is USGS streamgage 12039510 in Washington, monitoring river discharge in hydrologic subbasin 17100102. It drains a watershed of about 20 square miles. Discharge records at this site go back to 2014. Typical flow runs near 30.9 cfs in July and 103.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 20 sq mi
- Gauge elevation
- 159 ft
- Subbasin (HUC-8)
- 17100102
- Coordinates
- 47.35833, -123.99399
- USGS site number
- 12039510
- Records begin
- 2014-10-01 (12 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 10 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 102.9 | 225.5 | 743.9 | |
| February | 83.6 | 160.9 | 470.1 | |
| March | 73 | 144.7 | 413.4 | |
| April | 60.5 | 103.3 | 288 | |
| May | 43.8 | 62.3 | 125.2 | |
| June | 33.8 | 43 | 121.9 | |
| July | 27.1 | 30.9 | 54 | |
| August | 20.6 | 27 | 41.5 | |
| September | 21.2 | 27.3 | 56.3 | |
| October | 23.4 | 51.7 | 255.5 | |
| November | 42.1 | 148.9 | 555.2 | |
| December | 80.2 | 181.5 | 576 |
All values in cubic feet per second (cfs).
Common questions
- When does Cook Creek below Hatchery near Quinault, WA normally run highest?
- January, on the long-term record. The median daily flow that month is about 225.5 cfs, against 27 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 Cook Creek below Hatchery near Quinault, WA?
- It depends on the month. In January, half of days historically fall near 225.5 cfs, with the middle 80% of days between 102.9 and 743.9 cfs. The month-by-month table on this page gives the full range.
- How long has Cook Creek below Hatchery near Quinault, WA been measured?
- Discharge records at USGS site 12039510 begin in 2014, about 12 years, covering roughly 3,649 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Cook Creek below Hatchery near Quinault, WA?
- The gauge sits at 47.35833, -123.99399, in Washington, in hydrologic subbasin 17100102, at an elevation of about 159 feet, draining roughly 20 square miles.
- Can I use Cook Creek below Hatchery near Quinault, 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.