USGS Streamgage 11465660
Copeland C A Rohnert Park, CA
Copeland C A Rohnert Park, CA is USGS streamgage 11465660 in California, monitoring river discharge in hydrologic subbasin 18010110. It drains a watershed of about 6 square miles. Discharge records at this site go back to 2006.
Gauge details
- State
- California
- Drainage area
- 6 sq mi
- Gauge elevation
- 93 ft
- Subbasin (HUC-8)
- 18010110
- Coordinates
- 38.34325, -122.70193
- USGS site number
- 11465660
- Records begin
- 2006-10-01 (20 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 20 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
Only 7 of 12 months have enough record to summarize; the rest are omitted.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 0 | 3.4 | 61.8 | |
| February | 0.1 | 4.3 | 69.2 | |
| March | 0.3 | 4 | 45.4 | |
| April | 0.1 | 2.4 | 12.4 | |
| October | 0 | 0 | 5.8 | |
| November | 0 | 0.1 | 7 | |
| December | 0 | 1.6 | 39.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Copeland C A Rohnert Park, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 4.3 cfs, against 0 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Copeland C A Rohnert Park, CA?
- It depends on the month. In January, half of days historically fall near 3.4 cfs, with the middle 80% of days between 0 and 61.8 cfs. The month-by-month table on this page gives the full range.
- How long has Copeland C A Rohnert Park, CA been measured?
- Discharge records at USGS site 11465660 begin in 2006, about 20 years, covering roughly 4,245 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Copeland C A Rohnert Park, CA?
- The gauge sits at 38.34325, -122.70193, in California, in hydrologic subbasin 18010110, at an elevation of about 93 feet, draining roughly 6 square miles.
- Can I use Copeland C A Rohnert Park, 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.