USGS Streamgage 10338000
Truckee River near Truckee, CA
Truckee River near Truckee, CA is USGS streamgage 10338000 in California, monitoring river discharge in hydrologic subbasin 16050102. It sits on the Truckee River, alongside 10 other gauges Rivermatics tracks on the same river. It drains a watershed of about 553 square miles. Discharge records at this site go back to 1944. Typical flow runs near 296.3 cfs in July and 263.7 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
- California
- Drainage area
- 553 sq mi
- Gauge elevation
- 5,862 ft
- Subbasin (HUC-8)
- 16050102
- Coordinates
- 39.29627, -120.20545
- USGS site number
- 10338000
- Records begin
- 1944-12-01 (82 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Truckee River near Truckee, CA. 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 |
|---|---|---|---|---|
| 45.1 | 66.7 | 82.5 | ||
| 40 | 64.1 | 87.2 | ||
| 34.1 | 60.3 | 87.4 | ||
| 31.3 | 58.5 | 89.1 | ||
| 28.3 | 56.8 | 91.6 | ||
| 26 | 56 | 94.9 | ||
| 23.5 | 55.1 | 97.7 | ||
| 21.6 | 54.6 | 101 | ||
| 20.4 | 54.5 | 105 | ||
| 19.9 | 55.2 | 109 | ||
| 19.2 | 57.6 | 112 | ||
| 17.3 | 57.6 | 114 | ||
| 16.9 | 55.8 | 110 | ||
| 15.7 | 53.7 | 108 |
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 82 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 | 29.7 | 121.4 | 441.5 | |
| February | 45.8 | 124.8 | 658.3 | |
| March | 75.5 | 164.8 | 894.9 | |
| April | 136.3 | 263.7 | 1,249.9 | |
| May | 183.4 | 358.7 | 1,310.3 | |
| June | 138.3 | 309.8 | 1,086.1 | |
| July | 110.4 | 296.3 | 469.3 | |
| August | 52.6 | 291.2 | 439.8 | |
| September | 14.9 | 191.6 | 434.5 | |
| October | 8.5 | 91.5 | 331.5 | |
| November | 11.1 | 133.5 | 322.4 | |
| December | 17.5 | 149 | 396 |
All values in cubic feet per second (cfs).
Common questions
- When does Truckee River near Truckee, CA normally run highest?
- May, on the long-term record. The median daily flow that month is about 358.7 cfs, against 91.5 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Truckee River near Truckee, CA?
- It depends on the month. In January, half of days historically fall near 121.4 cfs, with the middle 80% of days between 29.7 and 441.5 cfs. The month-by-month table on this page gives the full range.
- How long has Truckee River near Truckee, CA been measured?
- Discharge records at USGS site 10338000 begin in 1944, about 82 years, covering roughly 9,130 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Truckee River near Truckee, CA?
- 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 Truckee River near Truckee, CA?
- The gauge sits at 39.29627, -120.20545, in California, in hydrologic subbasin 16050102, at an elevation of about 5,862 feet, draining roughly 553 square miles.
- Can I use Truckee River near Truckee, CA 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 Truckee River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Truckee River in full.
- Truckee River near Truckee, CA this page
- Truckee River below Martis C near Truckee, CA 639 sq mi
- Truckee River near Mogul, NV 1,035 sq mi
- Truckee River at Glendale Ave near Sparks, NV 1,064 sq mi
- Truckee River at Reno, NV 1,067 sq mi
- Truckee River near Sparks, NV 1,070 sq mi
- Truckee River at Vista, NV 1,431 sq mi
- Truckee River near Tracy, NV 1,580 sq mi
- Truckee River at Clark, NV 1,600 sq mi
- Truckee River below Derby Dam near Wadsworth, NV 1,676 sq mi
- Truckee River near Nixon, NV 1,827 sq mi
Other gauges in this subbasin
- Donner C A Donner Lake near Truckee, CA
- Donner C at Hwy 89 near Truckee, CA
- Truckee River below Martis C near Truckee, CA
- Prosser C below Prosser C Dam near Truckee, CA
- Perazzo C near Soda Springs, CA
- Independence C near Truckee, CA
- Sagehen C near Truckee, CA
- Little Truckee River Ab Boca Reservoir near Truckee, CA