Rivermatics

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 sits on the Truckee River, alongside 10 other gauges Rivermatics tracks on the same river. 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. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

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)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Truckee River near Tracy, NV. 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.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
371 389 406
366 390 412
360 389 414
355 388 420
352 388 427
348 389 432
341 387 434
337 386 438
328 382 435
323 382 438
327 395 473
326 393 466
326 393 467
321 390 468

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 30 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
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 9,130 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 Tracy, NV?
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 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.

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.

Other gauges in this subbasin