USGS Streamgage 11453500
Putah C near Guenoc, CA
Putah C near Guenoc, CA is USGS streamgage 11453500 in California, monitoring river discharge in hydrologic subbasin 18020162. It drains a watershed of about 113 square miles. Discharge records at this site go back to 1904. Typical flow runs near 5.9 cfs in July and 111.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 113 sq mi
- Gauge elevation
- 913 ft
- Subbasin (HUC-8)
- 18020162
- Coordinates
- 38.77876, -122.51745
- USGS site number
- 11453500
- Records begin
- 1904-03-10 (122 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 122 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 | 25.9 | 170.9 | 1,612.5 | |
| February | 48.6 | 229 | 1,742.8 | |
| March | 52.6 | 196.2 | 1,041.7 | |
| April | 32.1 | 111.8 | 496.4 | |
| May | 14.3 | 50.4 | 124.4 | |
| June | 3.8 | 17.8 | 51.2 | |
| July | 0.3 | 5.9 | 17 | |
| August | 0 | 2.6 | 7.3 | |
| September | 0 | 1.5 | 5.5 | |
| October | 0 | 1.9 | 14.2 | |
| November | 0.9 | 9.6 | 168.7 | |
| December | 5.5 | 65.2 | 1,082.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Putah C near Guenoc, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 229 cfs, against 1.5 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 Putah C near Guenoc, CA?
- It depends on the month. In January, half of days historically fall near 170.9 cfs, with the middle 80% of days between 25.9 and 1,612.5 cfs. The month-by-month table on this page gives the full range.
- How long has Putah C near Guenoc, CA been measured?
- Discharge records at USGS site 11453500 begin in 1904, about 122 years, covering roughly 9,126 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Putah C near Guenoc, CA?
- The gauge sits at 38.77876, -122.51745, in California, in hydrologic subbasin 18020162, at an elevation of about 913 feet, draining roughly 113 square miles.
- Can I use Putah C near Guenoc, 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.