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 sits on the Coyote C, alongside 4 other gauges Rivermatics tracks on the same river. 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. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
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)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Coyote C below Coyote Reservoir near San Martin, CA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 7.4 | 11.2 | 20.3 | ||
| 5.7 | 10.7 | 25 | ||
| 5.1 | 10.3 | 28.8 | ||
| 4.7 | 9.9 | 31.1 | ||
| 4.5 | 9.5 | 31.3 | ||
| 4.4 | 9.4 | 31.8 | ||
| 4.4 | 9.2 | 35.8 | ||
| 4.3 | 8.8 | 34.8 | ||
| 4.2 | 8.6 | 35.1 | ||
| 4.2 | 9.5 | 45 | ||
| 4.3 | 10 | 46.1 | ||
| 4 | 9 | 39.2 | ||
| 3.9 | 8.8 | 44.4 | ||
| 4 | 8.6 | 48 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
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 3,172 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Coyote C below Coyote Reservoir near San Martin, CA?
- Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
- 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.
Upstream and downstream on the Coyote C
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Coyote C in full.
- Coyote C near Gilroy, CA 109 sq mi
- Coyote C below Coyote Reservoir near San Martin, CA this page
- Coyote C below Coyote Ranch Rd near Coyote, CA 206 sq mi
- Coyote C near Edenvale, CA 229 sq mi
- Coyote C Ab Hwy 237 A Milpitas, CA 319 sq mi