USGS Streamgage 103366092
Upper Truckee River at Hwy 50 above Meyers, CA
Upper Truckee River at Hwy 50 above Meyers, CA is USGS streamgage 103366092 in California, monitoring river discharge in hydrologic subbasin 16050101. It drains a watershed of about 39 square miles. Discharge records at this site go back to 1990. Typical flow runs near 21.8 cfs in July and 116 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 39 sq mi
- Gauge elevation
- 6,310 ft
- Subbasin (HUC-8)
- 16050101
- Coordinates
- 38.84852, -120.02713
- USGS site number
- 103366092
- Records begin
- 1990-06-01 (36 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 36 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 | 8 | 20.6 | 96.8 | |
| February | 12.9 | 28.4 | 80 | |
| March | 25.9 | 46.5 | 119.4 | |
| April | 54.3 | 116 | 241.8 | |
| May | 87.4 | 217.5 | 594.7 | |
| June | 29.9 | 125.7 | 557.1 | |
| July | 6.3 | 21.8 | 204.1 | |
| August | 3 | 7.1 | 35.5 | |
| September | 2.5 | 5.4 | 21.4 | |
| October | 3.2 | 8.2 | 27.4 | |
| November | 5.5 | 11.2 | 45.4 | |
| December | 6.8 | 16 | 71.2 |
All values in cubic feet per second (cfs).
Common questions
- When does Upper Truckee River at Hwy 50 above Meyers, CA normally run highest?
- May, on the long-term record. The median daily flow that month is about 217.5 cfs, against 5.4 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Upper Truckee River at Hwy 50 above Meyers, CA?
- It depends on the month. In January, half of days historically fall near 20.6 cfs, with the middle 80% of days between 8 and 96.8 cfs. The month-by-month table on this page gives the full range.
- How long has Upper Truckee River at Hwy 50 above Meyers, CA been measured?
- Discharge records at USGS site 103366092 begin in 1990, about 36 years, covering roughly 9,125 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Upper Truckee River at Hwy 50 above Meyers, CA?
- The gauge sits at 38.84852, -120.02713, in California, in hydrologic subbasin 16050101, at an elevation of about 6,310 feet, draining roughly 39 square miles.
- Can I use Upper Truckee River at Hwy 50 above Meyers, 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.