USGS Streamgage 11458433
Sonoma Creek A Kenwood, CA
Sonoma Creek A Kenwood, CA is USGS streamgage 11458433 in California, monitoring river discharge in hydrologic subbasin 18050002. It drains a watershed of about 14 square miles. Discharge records at this site go back to 2008. Typical flow runs near 0.1 cfs in July and 11 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 14 sq mi
- Gauge elevation
- 408 ft
- Subbasin (HUC-8)
- 18050002
- Coordinates
- 38.4188, -122.56276
- USGS site number
- 11458433
- Records begin
- 2008-10-01 (18 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 18 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 | 0.3 | 11.9 | 164.6 | |
| February | 1.8 | 10.4 | 222 | |
| March | 1.9 | 18.5 | 158.4 | |
| April | 0.9 | 11 | 38.1 | |
| May | 0.2 | 3.5 | 11.2 | |
| June | 0 | 0.6 | 3.7 | |
| July | 0 | 0.1 | 0.5 | |
| August | 0 | 0 | 0.1 | |
| September | 0 | 0 | 0.1 | |
| October | 0 | 0 | 10.2 | |
| November | 0 | 0.2 | 20.1 | |
| December | 0.1 | 5.2 | 115.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Sonoma Creek A Kenwood, CA normally run highest?
- March, on the long-term record. The median daily flow that month is about 18.5 cfs, against 0 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Sonoma Creek A Kenwood, CA?
- It depends on the month. In January, half of days historically fall near 11.9 cfs, with the middle 80% of days between 0.3 and 164.6 cfs. The month-by-month table on this page gives the full range.
- How long has Sonoma Creek A Kenwood, CA been measured?
- Discharge records at USGS site 11458433 begin in 2008, about 18 years, covering roughly 6,514 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Sonoma Creek A Kenwood, CA?
- The gauge sits at 38.4188, -122.56276, in California, in hydrologic subbasin 18050002, at an elevation of about 408 feet, draining roughly 14 square miles.
- Can I use Sonoma Creek A Kenwood, 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.