USGS Streamgage 12039500
Quinault River at Quinault Lake, WA
Quinault River at Quinault Lake, WA is USGS streamgage 12039500 in Washington, monitoring river discharge in hydrologic subbasin 17100102. It sits on the Quinault River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 264 square miles. Discharge records at this site go back to 1909. Typical flow runs near 1,488 cfs in July and 2,335.3 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
- 264 sq mi
- Gauge elevation
- 189 ft
- Subbasin (HUC-8)
- 17100102
- Coordinates
- 47.45759, -123.88934
- USGS site number
- 12039500
- Records begin
- 1909-11-01 (117 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Quinault River at Quinault Lake, 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.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 471 | 481 | 490 | ||
| 454 | 472 | 499 | ||
| 454 | 486 | 569 | ||
| 447 | 490 | 598 | ||
| 433 | 476 | 572 | ||
| 414 | 455 | 531 | ||
| 397 | 436 | 501 | ||
| 383 | 421 | 480 | ||
| 371 | 410 | 463 | ||
| 362 | 401 | 453 | ||
| 352 | 391 | 441 | ||
| 343 | 382 | 430 | ||
| 336 | 374 | 423 | ||
| 331 | 370 | 420 |
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 115 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 | 1,365.2 | 3,241 | 9,287.7 | |
| February | 1,325.5 | 2,707.6 | 7,353.4 | |
| March | 1,312.6 | 2,402.6 | 5,490 | |
| April | 1,491.7 | 2,335.3 | 4,338 | |
| May | 1,725.8 | 2,591 | 4,185.5 | |
| June | 1,459 | 2,490.3 | 4,124.7 | |
| July | 802.6 | 1,488 | 2,984.5 | |
| August | 446.8 | 730.7 | 1,509.7 | |
| September | 365.3 | 662.3 | 1,840.3 | |
| October | 461.2 | 1,531.3 | 5,496.8 | |
| November | 1,268.2 | 3,261 | 8,777 | |
| December | 1,599 | 3,442.6 | 9,821.3 |
All values in cubic feet per second (cfs).
Common questions
- When does Quinault River at Quinault Lake, WA normally run highest?
- December, on the long-term record. The median daily flow that month is about 3,442.6 cfs, against 662.3 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Quinault River at Quinault Lake, WA?
- It depends on the month. In January, half of days historically fall near 3,241 cfs, with the middle 80% of days between 1,365.2 and 9,287.7 cfs. The month-by-month table on this page gives the full range.
- How long has Quinault River at Quinault Lake, WA been measured?
- Discharge records at USGS site 12039500 begin in 1909, about 117 years, covering roughly 9,199 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Quinault River at Quinault Lake, 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 Quinault River at Quinault Lake, WA?
- The gauge sits at 47.45759, -123.88934, in Washington, in hydrologic subbasin 17100102, at an elevation of about 189 feet, draining roughly 264 square miles.
- Can I use Quinault River at Quinault Lake, 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 Quinault River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Quinault River in full.
- Quinault River at Quinault Lake, WA this page
- Quinault River near Taholah, WA 412 sq mi