USGS Streamgage 11449820
Cole C A Kelseyville, CA
Cole C A Kelseyville, CA is USGS streamgage 11449820 in California, monitoring river discharge in hydrologic subbasin 18020116. It drains a watershed of about 23 square miles. Discharge records at this site go back to 2022.
Gauge details
- State
- California
- Drainage area
- 23 sq mi
- Gauge elevation
- 1,371 ft
- Subbasin (HUC-8)
- 18020116
- Coordinates
- 38.97933, -122.83058
- USGS site number
- 11449820
- Records begin
- 2022-10-01 (4 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 4 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 9 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | — | 4.3 | — | |
| February | — | 15.4 | — | |
| March | — | 12 | — | |
| April | — | 5.6 | — | |
| May | — | 0.8 | — | |
| June | — | 0.1 | — | |
| October | — | 0 | — | |
| November | — | 0 | — | |
| December | — | 2.1 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Cole C A Kelseyville, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 15.4 cfs, against 0 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- How long has Cole C A Kelseyville, CA been measured?
- Discharge records at USGS site 11449820 begin in 2022, about 4 years, covering roughly 960 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Cole C A Kelseyville, CA?
- The gauge sits at 38.97933, -122.83058, in California, in hydrologic subbasin 18020116, at an elevation of about 1,371 feet, draining roughly 23 square miles.
- Can I use Cole C A Kelseyville, 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.