USGS Streamgage 11153000
Pacheco C near Dunneville, CA
Pacheco C near Dunneville, CA is USGS streamgage 11153000 in California, monitoring river discharge in hydrologic subbasin 18060002. It drains a watershed of about 146 square miles. Discharge records at this site go back to 1939. Typical flow runs near 3 cfs in July and 4.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 146 sq mi
- Gauge elevation
- 234 ft
- Subbasin (HUC-8)
- 18060002
- Coordinates
- 36.98, -121.38028
- USGS site number
- 11153000
- Records begin
- 1939-10-01 (87 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 87 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 | 0 | 0.8 | 244.7 | |
| February | 0 | 7.9 | 353.6 | |
| March | 0 | 10.1 | 212.8 | |
| April | 0 | 4.6 | 76.6 | |
| May | 0 | 1.7 | 14.1 | |
| June | 0 | 1 | 14.1 | |
| July | 0 | 3 | 12.7 | |
| August | 0 | 0.7 | 11.3 | |
| September | 0 | 0 | 8.4 | |
| October | 0 | 0 | 6 | |
| November | 0 | 0 | 3.8 | |
| December | 0 | 0 | 43.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Pacheco C near Dunneville, CA normally run highest?
- March, on the long-term record. The median daily flow that month is about 10.1 cfs, against 0 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 Pacheco C near Dunneville, CA?
- It depends on the month. In January, half of days historically fall near 0.8 cfs, with the middle 80% of days between 0 and 244.7 cfs. The month-by-month table on this page gives the full range.
- How long has Pacheco C near Dunneville, CA been measured?
- Discharge records at USGS site 11153000 begin in 1939, about 87 years, covering roughly 7,245 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Pacheco C near Dunneville, CA?
- The gauge sits at 36.98, -121.38028, in California, in hydrologic subbasin 18060002, at an elevation of about 234 feet, draining roughly 146 square miles.
- Can I use Pacheco C near Dunneville, 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.