USGS Streamgage 12444550
Bonaparte Creek at Tonasket, WA
Bonaparte Creek at Tonasket, WA is USGS streamgage 12444550 in Washington, monitoring river discharge in hydrologic subbasin 17020006. It drains a watershed of about 161 square miles. Discharge records at this site go back to 2016. Typical flow runs near 3.2 cfs in July and 19.3 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
- 161 sq mi
- Gauge elevation
- 927 ft
- Subbasin (HUC-8)
- 17020006
- Coordinates
- 48.70121, -119.44282
- USGS site number
- 12444550
- Records begin
- 2016-03-01 (10 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Bonaparte Creek at Tonasket, 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 |
|---|---|---|---|---|
| 0.1 | 0.2 | 0.2 | ||
| 0.1 | 0.2 | 0.2 | ||
| 0.2 | 0.4 | 1.5 | ||
| 0.2 | 0.3 | 0.9 | ||
| 0.2 | 0.3 | 0.8 | ||
| 0.1 | 0.3 | 0.7 | ||
| 0.1 | 0.3 | 0.7 | ||
| 0.1 | 0.2 | 0.6 | ||
| 0.1 | 0.2 | 0.6 | ||
| 0.1 | 0.2 | 0.6 | ||
| 0 | 0.2 | 0.5 | ||
| 0 | 0.2 | 0.5 | ||
| 0 | 0.2 | 0.6 | ||
| 0 | 0.2 | 0.6 |
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 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 | 3.3 | 5.4 | 12.4 | |
| February | 3.1 | 6.3 | 16 | |
| March | 6.6 | 12.1 | 28.8 | |
| April | 5.3 | 19.3 | 37.6 | |
| May | 5.9 | 21.8 | 87.1 | |
| June | 3 | 11 | 36 | |
| July | 0.5 | 3.2 | 11.9 | |
| August | 0.2 | 1.1 | 3.8 | |
| September | 0.3 | 1.1 | 3.8 | |
| October | 1 | 2.8 | 5.6 | |
| November | 2.9 | 4.8 | 9.1 | |
| December | 2.6 | 5.2 | 8.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Bonaparte Creek at Tonasket, WA normally run highest?
- May, on the long-term record. The median daily flow that month is about 21.8 cfs, against 1.1 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 Bonaparte Creek at Tonasket, WA?
- It depends on the month. In January, half of days historically fall near 5.4 cfs, with the middle 80% of days between 3.3 and 12.4 cfs. The month-by-month table on this page gives the full range.
- How long has Bonaparte Creek at Tonasket, WA been measured?
- Discharge records at USGS site 12444550 begin in 2016, about 10 years, covering roughly 3,801 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Bonaparte Creek at Tonasket, 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 Bonaparte Creek at Tonasket, WA?
- The gauge sits at 48.70121, -119.44282, in Washington, in hydrologic subbasin 17020006, at an elevation of about 927 feet, draining roughly 161 square miles.
- Can I use Bonaparte Creek at Tonasket, 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.