USGS Streamgage 12048000
Dungeness River near Sequim, WA
Dungeness River near Sequim, WA is USGS streamgage 12048000 in Washington, monitoring river discharge in hydrologic subbasin 17110020. It drains a watershed of about 156 square miles. Discharge records at this site go back to 1923. Typical flow runs near 443.3 cfs in July and 294.9 cfs in April, with the higher of the two arriving in July. 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
- 156 sq mi
- Gauge elevation
- 569 ft
- Subbasin (HUC-8)
- 17110020
- Coordinates
- 48.01426, -123.13268
- USGS site number
- 12048000
- Records begin
- 1923-06-01 (103 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Dungeness River near Sequim, 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 |
|---|---|---|---|---|
| 74 | 76.3 | 78.8 | ||
| 74.3 | 77.5 | 82.1 | ||
| 74.9 | 79.7 | 89.7 | ||
| 73.6 | 78.3 | 87.3 | ||
| 72.3 | 76.4 | 82.7 | ||
| 70.8 | 74.6 | 79.7 | ||
| 69.5 | 73.2 | 77.8 | ||
| 68.4 | 72.1 | 76.5 | ||
| 67.2 | 71 | 75.2 | ||
| 66.4 | 70.2 | 74.3 | ||
| 65.6 | 69.4 | 73.4 | ||
| 64.9 | 68.8 | 72.9 | ||
| 64.2 | 68.2 | 72.4 | ||
| 63.5 | 67.6 | 71.9 |
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 103 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 | 153.4 | 313.5 | 842.4 | |
| February | 146.7 | 278.8 | 702.2 | |
| March | 148.8 | 244.9 | 495.2 | |
| April | 189.4 | 294.9 | 494.5 | |
| May | 324.4 | 512.5 | 873.6 | |
| June | 390.3 | 631.6 | 1,048.4 | |
| July | 248.9 | 443.3 | 743.2 | |
| August | 143.5 | 225 | 390.9 | |
| September | 101.5 | 145.9 | 246.8 | |
| October | 92.5 | 150.3 | 394.1 | |
| November | 122.2 | 246.7 | 777.4 | |
| December | 139.2 | 310.1 | 849.3 |
All values in cubic feet per second (cfs).
Common questions
- When does Dungeness River near Sequim, WA normally run highest?
- June, on the long-term record. The median daily flow that month is about 631.6 cfs, against 145.9 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 Dungeness River near Sequim, WA?
- It depends on the month. In January, half of days historically fall near 313.5 cfs, with the middle 80% of days between 153.4 and 842.4 cfs. The month-by-month table on this page gives the full range.
- How long has Dungeness River near Sequim, WA been measured?
- Discharge records at USGS site 12048000 begin in 1923, about 103 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 Dungeness River near Sequim, 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 Dungeness River near Sequim, WA?
- The gauge sits at 48.01426, -123.13268, in Washington, in hydrologic subbasin 17110020, at an elevation of about 569 feet, draining roughly 156 square miles.
- Can I use Dungeness River near Sequim, 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.