USGS Streamgage 11174160
Alameda C A Sunol Water Temple A Sunol, CA
Alameda C A Sunol Water Temple A Sunol, CA is USGS streamgage 11174160 in California, monitoring river discharge in hydrologic subbasin 18050004. It drains a watershed of about 200 square miles. Discharge records at this site go back to 2023. Typical flow runs near 11.8 cfs in July and 30.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 200 sq mi
- Gauge elevation
- 223 ft
- Subbasin (HUC-8)
- 18050004
- Coordinates
- 37.58363, -121.88529
- USGS site number
- 11174160
- Records begin
- 2023-09-28 (3 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 3 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 | — | 22.6 | — | |
| February | — | 49.9 | — | |
| March | — | 39.5 | — | |
| April | — | 30.8 | — | |
| May | — | 18.5 | — | |
| June | — | 14 | — | |
| July | — | 11.8 | — | |
| August | — | 12.4 | — | |
| September | — | 12.4 | — | |
| October | — | 9.2 | — | |
| November | — | 7.7 | — | |
| December | — | 10.7 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Alameda C A Sunol Water Temple A Sunol, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 49.9 cfs, against 7.7 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- How long has Alameda C A Sunol Water Temple A Sunol, CA been measured?
- Discharge records at USGS site 11174160 begin in 2023, about 3 years, covering roughly 1,003 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Alameda C A Sunol Water Temple A Sunol, CA?
- The gauge sits at 37.58363, -121.88529, in California, in hydrologic subbasin 18050004, at an elevation of about 223 feet, draining roughly 200 square miles.
- Can I use Alameda C A Sunol Water Temple A Sunol, 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.