USGS Streamgage 11460151
Redwood C A Hwy 1 Bridge A Muir Beach, CA
Redwood C A Hwy 1 Bridge A Muir Beach, CA is USGS streamgage 11460151 in California, monitoring river discharge in hydrologic subbasin 18050005. It drains a watershed of about 7 square miles. Discharge records at this site go back to 2014. Typical flow runs near 0.5 cfs in July and 5.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 7 sq mi
- Gauge elevation
- 15 ft
- Subbasin (HUC-8)
- 18050005
- Coordinates
- 37.86611, -122.57861
- USGS site number
- 11460151
- Records begin
- 2014-10-01 (12 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 12 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 | 1.8 | 13.7 | 121.6 | |
| February | 1.8 | 8 | 146.9 | |
| March | 1.3 | 8.4 | 78.3 | |
| April | 0.8 | 5.7 | 39.4 | |
| May | 0.4 | 2.1 | 10.2 | |
| June | 0.2 | 0.9 | 3 | |
| July | 0.1 | 0.5 | 1.3 | |
| August | 0 | 0.2 | 0.7 | |
| September | 0 | 0.1 | 0.5 | |
| October | 0 | 0.1 | 17.3 | |
| November | 0.1 | 0.5 | 16.1 | |
| December | 0.4 | 6.3 | 111.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Redwood C A Hwy 1 Bridge A Muir Beach, CA normally run highest?
- January, on the long-term record. The median daily flow that month is about 13.7 cfs, against 0.1 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Redwood C A Hwy 1 Bridge A Muir Beach, CA?
- It depends on the month. In January, half of days historically fall near 13.7 cfs, with the middle 80% of days between 1.8 and 121.6 cfs. The month-by-month table on this page gives the full range.
- How long has Redwood C A Hwy 1 Bridge A Muir Beach, CA been measured?
- Discharge records at USGS site 11460151 begin in 2014, about 12 years, covering roughly 4,323 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Redwood C A Hwy 1 Bridge A Muir Beach, CA?
- The gauge sits at 37.86611, -122.57861, in California, in hydrologic subbasin 18050005, at an elevation of about 15 feet, draining roughly 7 square miles.
- Can I use Redwood C A Hwy 1 Bridge A Muir Beach, 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.