USGS Streamgage 11242000
San Joaquin River Ab Willow C near Auberry, CA
San Joaquin River Ab Willow C near Auberry, CA is USGS streamgage 11242000 in California, monitoring river discharge in hydrologic subbasin 18040006. It drains a watershed of about 1,295 square miles. Discharge records at this site go back to 1950. Typical flow runs near 29.1 cfs in July and 31.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 1,295 sq mi
- Gauge elevation
- 1,176 ft
- Subbasin (HUC-8)
- 18040006
- Coordinates
- 37.14439, -119.45458
- USGS site number
- 11242000
- Records begin
- 1950-11-18 (76 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 75 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 | 5.4 | 21 | 358.9 | |
| February | 4 | 19.2 | 389 | |
| March | 3.8 | 21.2 | 717.2 | |
| April | 4 | 31.2 | 1,812.7 | |
| May | 7.3 | 93.4 | 6,077.7 | |
| June | 16.2 | 438.7 | 8,107.3 | |
| July | 17.9 | 29.1 | 3,617.4 | |
| August | 19.2 | 23.4 | 146.8 | |
| September | 18.2 | 23 | 45.9 | |
| October | 16.5 | 22.8 | 44.6 | |
| November | 13.3 | 22.3 | 43.9 | |
| December | 8.3 | 21.6 | 45.1 |
All values in cubic feet per second (cfs).
Common questions
- When does San Joaquin River Ab Willow C near Auberry, CA normally run highest?
- June, on the long-term record. The median daily flow that month is about 438.7 cfs, against 19.2 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for San Joaquin River Ab Willow C near Auberry, CA?
- It depends on the month. In January, half of days historically fall near 21 cfs, with the middle 80% of days between 5.4 and 358.9 cfs. The month-by-month table on this page gives the full range.
- How long has San Joaquin River Ab Willow C near Auberry, CA been measured?
- Discharge records at USGS site 11242000 begin in 1950, about 76 years, covering roughly 8,821 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is San Joaquin River Ab Willow C near Auberry, CA?
- The gauge sits at 37.14439, -119.45458, in California, in hydrologic subbasin 18040006, at an elevation of about 1,176 feet, draining roughly 1,295 square miles.
- Can I use San Joaquin River Ab Willow C near Auberry, 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.