USGS Streamgage 11042900
Santa Gertrudis C near Temecula, CA
Santa Gertrudis C near Temecula, CA is USGS streamgage 11042900 in California, monitoring river discharge in hydrologic subbasin 18070302. It drains a watershed of about 90 square miles. Discharge records at this site go back to 1987. Typical flow runs near 0 cfs in July and 0 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 90 sq mi
- Gauge elevation
- 1,040 ft
- Subbasin (HUC-8)
- 18070302
- Coordinates
- 33.52447, -117.16475
- USGS site number
- 11042900
- Records begin
- 1987-10-01 (39 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 39 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 | 21.9 | |
| February | 0 | 0 | 26.1 | |
| March | 0 | 0 | 27.9 | |
| April | 0 | 0 | 10.9 | |
| May | 0 | 0 | 1.2 | |
| June | 0 | 0 | 0 | |
| July | 0 | 0 | 0 | |
| August | 0 | 0 | 0 | |
| September | 0 | 0 | 0 | |
| October | 0 | 0 | 0.1 | |
| November | 0 | 0 | 1 | |
| December | 0 | 0 | 3.7 |
All values in cubic feet per second (cfs).
Common questions
- When does Santa Gertrudis C near Temecula, CA normally run highest?
- January, on the long-term record. The median daily flow that month is about 0 cfs, against 0 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Santa Gertrudis C near Temecula, CA?
- It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 21.9 cfs. The month-by-month table on this page gives the full range.
- How long has Santa Gertrudis C near Temecula, CA been measured?
- Discharge records at USGS site 11042900 begin in 1987, about 39 years, covering roughly 8,776 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Santa Gertrudis C near Temecula, CA?
- The gauge sits at 33.52447, -117.16475, in California, in hydrologic subbasin 18070302, at an elevation of about 1,040 feet, draining roughly 90 square miles.
- Can I use Santa Gertrudis C near Temecula, 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.