USGS Streamgage 10344505
Truckee River A Boca Bridge near Truckee, CA
Truckee River A Boca Bridge near Truckee, CA is USGS streamgage 10344505 in California, monitoring river discharge in hydrologic subbasin 16050102. It drains a watershed of about 872 square miles. Discharge records at this site go back to 2002. Typical flow runs near 519.6 cfs in July and 688.2 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
- California
- Drainage area
- 872 sq mi
- Gauge elevation
- 5,476 ft
- Subbasin (HUC-8)
- 16050102
- Coordinates
- 39.38516, -120.08767
- USGS site number
- 10344505
- Records begin
- 2002-08-28 (24 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Truckee River A Boca Bridge 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 |
|---|---|---|---|---|
| 477 | 484 | 489 | ||
| 471 | 484 | 490 | ||
| 463 | 484 | 493 | ||
| 452 | 483 | 497 | ||
| 439 | 482 | 501 | ||
| 430 | 481 | 508 | ||
| 414 | 480 | 509 | ||
| 399 | 479 | 511 | ||
| 395 | 478 | 514 | ||
| 383 | 477 | 517 | ||
| 343 | 470 | 518 | ||
| 326 | 472 | 523 | ||
| 336 | 471 | 525 | ||
| 350 | 472 | 528 |
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 24 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 | 186 | 302.7 | 679.2 | |
| February | 214.9 | 329.8 | 760.3 | |
| March | 321.5 | 480.3 | 1,629.4 | |
| April | 464.4 | 688.2 | 3,311.7 | |
| May | 610.1 | 897.3 | 3,084.5 | |
| June | 424.3 | 671.1 | 2,179 | |
| July | 421.4 | 519.6 | 840.7 | |
| August | 242.7 | 481.7 | 576.4 | |
| September | 123.1 | 470.9 | 550.7 | |
| October | 85.2 | 391.6 | 487.9 | |
| November | 95.9 | 308.8 | 469.2 | |
| December | 119.1 | 310.8 | 702.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Truckee River A Boca Bridge near Truckee, CA normally run highest?
- May, on the long-term record. The median daily flow that month is about 897.3 cfs, against 302.7 cfs in January, 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 A Boca Bridge near Truckee, CA?
- It depends on the month. In January, half of days historically fall near 302.7 cfs, with the middle 80% of days between 186 and 679.2 cfs. The month-by-month table on this page gives the full range.
- How long has Truckee River A Boca Bridge near Truckee, CA been measured?
- Discharge records at USGS site 10344505 begin in 2002, about 24 years, covering roughly 8,744 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 A Boca Bridge 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 A Boca Bridge near Truckee, CA?
- The gauge sits at 39.38516, -120.08767, in California, in hydrologic subbasin 16050102, at an elevation of about 5,476 feet, draining roughly 872 square miles.
- Can I use Truckee River A Boca Bridge 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.