USGS Streamgage 11460600
Lagunitas C near Pt Reyes Station, CA
Lagunitas C near Pt Reyes Station, CA is USGS streamgage 11460600 in California, monitoring river discharge in hydrologic subbasin 18050005. It drains a watershed of about 82 square miles. Discharge records at this site go back to 1974. Typical flow runs near 7.8 cfs in July and 26 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 82 sq mi
- Gauge elevation
- 17 ft
- Subbasin (HUC-8)
- 18050005
- Coordinates
- 38.0802, -122.78443
- USGS site number
- 11460600
- Records begin
- 1974-10-01 (52 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 52 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 | 15 | 54.7 | 748.9 | |
| February | 19.6 | 75.9 | 968.4 | |
| March | 21.7 | 75.3 | 653.3 | |
| April | 13.6 | 26 | 170.3 | |
| May | 7.4 | 13.9 | 35.8 | |
| June | 2.9 | 10.5 | 15.3 | |
| July | 2.9 | 7.8 | 9.9 | |
| August | 3 | 7 | 9.2 | |
| September | 2.6 | 7.2 | 9 | |
| October | 2.8 | 8.1 | 14.5 | |
| November | 3.6 | 16.7 | 54.4 | |
| December | 7.4 | 30 | 349.2 |
All values in cubic feet per second (cfs).
Common questions
- When does Lagunitas C near Pt Reyes Station, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 75.9 cfs, against 7 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 Lagunitas C near Pt Reyes Station, CA?
- It depends on the month. In January, half of days historically fall near 54.7 cfs, with the middle 80% of days between 15 and 748.9 cfs. The month-by-month table on this page gives the full range.
- How long has Lagunitas C near Pt Reyes Station, CA been measured?
- Discharge records at USGS site 11460600 begin in 1974, about 52 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 near Pt Reyes Station, CA?
- The gauge sits at 38.0802, -122.78443, in California, in hydrologic subbasin 18050005, at an elevation of about 17 feet, draining roughly 82 square miles.
- Can I use Lagunitas C near Pt Reyes Station, 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.