USGS Streamgage 11169860
Coyote C below Coyote Reservoir near San Martin, CA
Coyote C below Coyote Reservoir near San Martin, CA is USGS streamgage 11169860 in California, monitoring river discharge in hydrologic subbasin 18050003. It drains a watershed of about 120 square miles. Discharge records at this site go back to 2017. Typical flow runs near 3.3 cfs in July and 9.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 120 sq mi
- Gauge elevation
- 668 ft
- Subbasin (HUC-8)
- 18050003
- Coordinates
- 37.12297, -121.55268
- USGS site number
- 11169860
- Records begin
- 2017-11-28 (9 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 8 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 | — | 8.9 | — | |
| February | — | 7.4 | — | |
| March | — | 16.7 | — | |
| April | — | 9.3 | — | |
| May | — | 7.7 | — | |
| June | — | 4 | — | |
| July | — | 3.3 | — | |
| August | — | 3.2 | — | |
| September | — | 3.4 | — | |
| October | — | 5 | — | |
| November | — | 9.6 | — | |
| December | — | 7.4 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Coyote C below Coyote Reservoir near San Martin, CA normally run highest?
- March, on the long-term record. The median daily flow that month is about 16.7 cfs, against 3.2 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- How long has Coyote C below Coyote Reservoir near San Martin, CA been measured?
- Discharge records at USGS site 11169860 begin in 2017, about 9 years, covering roughly 3,168 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Coyote C below Coyote Reservoir near San Martin, CA?
- The gauge sits at 37.12297, -121.55268, in California, in hydrologic subbasin 18050003, at an elevation of about 668 feet, draining roughly 120 square miles.
- Can I use Coyote C below Coyote Reservoir near San Martin, 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.