Rivermatics

USGS Streamgage 10339410

Truckee River below Martis C near Truckee, CA

Truckee River below Martis C near Truckee, CA is USGS streamgage 10339410 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 639 square miles. Discharge records at this site go back to 2016. Typical flow runs near 324.5 cfs in July and 753.6 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
639 sq mi
Gauge elevation
5,634 ft
Subbasin (HUC-8)
16050102
Coordinates
39.35306, -120.11944
USGS site number
10339410
Records begin
2016-06-17 (10 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Truckee River below Martis C 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.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
79.9 103 119
74.3 99.9 121
65.4 94.8 120
60.6 91.4 119
55.1 88.3 120
49.4 85.6 121
44.7 83.2 122
41.3 81.6 124
38.1 80 125
36.2 79.6 126
32.2 78.5 128
30.6 80.3 131
30.6 78.6 128
27.9 76.1 127

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.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 117.5 173.5 835.5
February 130.6 188.7 1,387.4
March 214.4 333.3 1,491
April 404.4 753.6 2,600.3
May 445.4 755.6 2,672.6
June 242.2 485.3 1,927.7
July 180.7 324.5 528.1
August 81.8 293.7 339.2
September 60.6 152.7 306.3
October 25.5 108 317.6
November 84.2 150.2 758.5
December 69.5 160.1 877.5

All values in cubic feet per second (cfs).

Common questions

When does Truckee River below Martis C near Truckee, CA normally run highest?
May, on the long-term record. The median daily flow that month is about 755.6 cfs, against 108 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 below Martis C near Truckee, CA?
It depends on the month. In January, half of days historically fall near 173.5 cfs, with the middle 80% of days between 117.5 and 835.5 cfs. The month-by-month table on this page gives the full range.
How long has Truckee River below Martis C near Truckee, CA been measured?
Discharge records at USGS site 10339410 begin in 2016, about 10 years, covering roughly 3,702 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 below Martis C 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 below Martis C near Truckee, CA?
The gauge sits at 39.35306, -120.11944, in California, in hydrologic subbasin 16050102, at an elevation of about 5,634 feet, draining roughly 639 square miles.
Can I use Truckee River below Martis C 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.

Other gauges in this subbasin