USGS Streamgage 11460400
Lagunitas C A Samuel P Taylor State Park, CA
Lagunitas C A Samuel P Taylor State Park, CA is USGS streamgage 11460400 in California, monitoring river discharge in hydrologic subbasin 18050005. It drains a watershed of about 34 square miles. Discharge records at this site go back to 1982. Typical flow runs near 7.9 cfs in July and 17.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 34 sq mi
- Gauge elevation
- 106 ft
- Subbasin (HUC-8)
- 18050005
- Coordinates
- 38.02683, -122.73633
- USGS site number
- 11460400
- Records begin
- 1982-12-21 (44 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 44 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 | 17.3 | 32.2 | 339.6 | |
| February | 17.2 | 38.8 | 478.4 | |
| March | 19.8 | 35.5 | 358.7 | |
| April | 12.2 | 17.5 | 92.1 | |
| May | 9.1 | 12.2 | 25.8 | |
| June | 7 | 10 | 12.4 | |
| July | 5.5 | 7.9 | 8.7 | |
| August | 4.8 | 7.9 | 8.7 | |
| September | 4.8 | 7.9 | 8.7 | |
| October | 5.1 | 8.3 | 13.1 | |
| November | 8.4 | 16.4 | 36.3 | |
| December | 17.3 | 25.3 | 176.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Lagunitas C A Samuel P Taylor State Park, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 38.8 cfs, against 7.9 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Lagunitas C A Samuel P Taylor State Park, CA?
- It depends on the month. In January, half of days historically fall near 32.2 cfs, with the middle 80% of days between 17.3 and 339.6 cfs. The month-by-month table on this page gives the full range.
- How long has Lagunitas C A Samuel P Taylor State Park, CA been measured?
- Discharge records at USGS site 11460400 begin in 1982, about 44 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 Lagunitas C A Samuel P Taylor State Park, CA?
- The gauge sits at 38.02683, -122.73633, in California, in hydrologic subbasin 18050005, at an elevation of about 106 feet, draining roughly 34 square miles.
- Can I use Lagunitas C A Samuel P Taylor State 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.