USGS Streamgage 10350340
Truckee River near Tracy, NV
Truckee River near Tracy, NV is USGS streamgage 10350340 in Nevada, monitoring river discharge in hydrologic subbasin 16050102. It drains a watershed of about 1,580 square miles. Discharge records at this site go back to 1997. Typical flow runs near 434.9 cfs in July and 835 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Nevada
- Drainage area
- 1,580 sq mi
- Gauge elevation
- 4,255 ft
- Subbasin (HUC-8)
- 16050102
- Coordinates
- 39.55658, -119.55324
- USGS site number
- 10350340
- Records begin
- 1997-02-25 (29 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 30 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 | 265.9 | 451.3 | 972.5 | |
| February | 322.8 | 467.6 | 1,306.6 | |
| March | 388.8 | 636.3 | 2,281.3 | |
| April | 470.4 | 835 | 3,286 | |
| May | 534.3 | 980.4 | 3,375.5 | |
| June | 322.5 | 690.2 | 2,655.3 | |
| July | 262.8 | 434.9 | 947.9 | |
| August | 196.2 | 350.2 | 537.5 | |
| September | 102.6 | 375.8 | 522.1 | |
| October | 118.7 | 412 | 535.6 | |
| November | 173 | 400.2 | 574.9 | |
| December | 204.5 | 431.8 | 991.5 |
All values in cubic feet per second (cfs).
Common questions
- When does Truckee River near Tracy, NV normally run highest?
- May, on the long-term record. The median daily flow that month is about 980.4 cfs, against 350.2 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 Truckee River near Tracy, NV?
- It depends on the month. In January, half of days historically fall near 451.3 cfs, with the middle 80% of days between 265.9 and 972.5 cfs. The month-by-month table on this page gives the full range.
- How long has Truckee River near Tracy, NV been measured?
- Discharge records at USGS site 10350340 begin in 1997, about 29 years, covering roughly 9,126 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Truckee River near Tracy, NV?
- The gauge sits at 39.55658, -119.55324, in Nevada, in hydrologic subbasin 16050102, at an elevation of about 4,255 feet, draining roughly 1,580 square miles.
- Can I use Truckee River near Tracy, NV 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.