USGS Streamgage 10351600
Truckee River below Derby Dam near Wadsworth, NV
Truckee River below Derby Dam near Wadsworth, NV is USGS streamgage 10351600 in Nevada, monitoring river discharge in hydrologic subbasin 16050102. It drains a watershed of about 1,676 square miles. Discharge records at this site go back to 1909. Typical flow runs near 39.1 cfs in July and 402.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Nevada
- Drainage area
- 1,676 sq mi
- Gauge elevation
- 4,186 ft
- Subbasin (HUC-8)
- 16050102
- Coordinates
- 39.58463, -119.44129
- USGS site number
- 10351600
- Records begin
- 1909-01-17 (117 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 109 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 | 2.1 | 139.8 | 962.4 | |
| February | 2.6 | 170 | 1,625 | |
| March | 3.2 | 254.8 | 1,796.5 | |
| April | 13.8 | 402.1 | 2,445.7 | |
| May | 21 | 655.7 | 2,988.7 | |
| June | 15.7 | 226.8 | 2,200.3 | |
| July | 14.2 | 39.1 | 629.7 | |
| August | 14.1 | 32.5 | 316.9 | |
| September | 10 | 34.5 | 318 | |
| October | 3 | 30.6 | 320.7 | |
| November | 2 | 28.5 | 427.6 | |
| December | 2.1 | 57.1 | 716.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Truckee River below Derby Dam near Wadsworth, NV normally run highest?
- May, on the long-term record. The median daily flow that month is about 655.7 cfs, against 28.5 cfs in November, 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 Derby Dam near Wadsworth, NV?
- It depends on the month. In January, half of days historically fall near 139.8 cfs, with the middle 80% of days between 2.1 and 962.4 cfs. The month-by-month table on this page gives the full range.
- How long has Truckee River below Derby Dam near Wadsworth, NV been measured?
- Discharge records at USGS site 10351600 begin in 1909, about 117 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 below Derby Dam near Wadsworth, NV?
- The gauge sits at 39.58463, -119.44129, in Nevada, in hydrologic subbasin 16050102, at an elevation of about 4,186 feet, draining roughly 1,676 square miles.
- Can I use Truckee River below Derby Dam near Wadsworth, 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.