USGS Streamgage 11460750
Walker C near Marshall, CA
Walker C near Marshall, CA is USGS streamgage 11460750 in California, monitoring river discharge in hydrologic subbasin 18050005. It drains a watershed of about 31 square miles. Discharge records at this site go back to 1982. Typical flow runs near 5.3 cfs in July and 11.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 31 sq mi
- Gauge elevation
- 149 ft
- Subbasin (HUC-8)
- 18050005
- Coordinates
- 38.17575, -122.81833
- USGS site number
- 11460750
- Records begin
- 1982-01-04 (44 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 43 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 | 11.1 | 21.8 | 270.6 | |
| February | 10.3 | 26.6 | 342.8 | |
| March | 11.6 | 24.2 | 201 | |
| April | 7.2 | 11.6 | 48 | |
| May | 3.7 | 6.2 | 11.7 | |
| June | 3 | 5.5 | 7.2 | |
| July | 2.4 | 5.3 | 6.2 | |
| August | 2.4 | 5.2 | 5.9 | |
| September | 2.4 | 5.2 | 5.9 | |
| October | 2.5 | 5.2 | 6.3 | |
| November | 3.2 | 5.6 | 14.8 | |
| December | 4.1 | 13.3 | 151.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Walker C near Marshall, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 26.6 cfs, against 5.2 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 Walker C near Marshall, CA?
- It depends on the month. In January, half of days historically fall near 21.8 cfs, with the middle 80% of days between 11.1 and 270.6 cfs. The month-by-month table on this page gives the full range.
- How long has Walker C near Marshall, CA been measured?
- Discharge records at USGS site 11460750 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 Walker C near Marshall, CA?
- The gauge sits at 38.17575, -122.81833, in California, in hydrologic subbasin 18050005, at an elevation of about 149 feet, draining roughly 31 square miles.
- Can I use Walker C near Marshall, 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.