USGS Streamgage 11237000
Big C below Huntington Lake, CA
Big C below Huntington Lake, CA is USGS streamgage 11237000 in California, monitoring river discharge in hydrologic subbasin 18040006. It drains a watershed of about 81 square miles. Discharge records at this site go back to 1925. Typical flow runs near 2.9 cfs in July and 3.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 81 sq mi
- Gauge elevation
- 6,630 ft
- Subbasin (HUC-8)
- 18040006
- Coordinates
- 37.22133, -119.21262
- USGS site number
- 11237000
- Records begin
- 1925-06-09 (101 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 101 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 | 0.3 | 1.7 | 3.9 | |
| February | 0.4 | 1.8 | 3.6 | |
| March | 0.7 | 2 | 3.9 | |
| April | 1.3 | 3.1 | 5.7 | |
| May | 1.3 | 3.6 | 10.4 | |
| June | 0.8 | 2.9 | 11.2 | |
| July | 0.6 | 2.9 | 10.1 | |
| August | 0.4 | 2.4 | 6.5 | |
| September | 0.3 | 2.4 | 5.1 | |
| October | 0.3 | 2.4 | 4.5 | |
| November | 0.3 | 2.3 | 4.1 | |
| December | 0.3 | 2.1 | 4.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Big C below Huntington Lake, CA normally run highest?
- May, on the long-term record. The median daily flow that month is about 3.6 cfs, against 1.7 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Big C below Huntington Lake, CA?
- It depends on the month. In January, half of days historically fall near 1.7 cfs, with the middle 80% of days between 0.3 and 3.9 cfs. The month-by-month table on this page gives the full range.
- How long has Big C below Huntington Lake, CA been measured?
- Discharge records at USGS site 11237000 begin in 1925, about 101 years, covering roughly 8,821 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Big C below Huntington Lake, CA?
- The gauge sits at 37.22133, -119.21262, in California, in hydrologic subbasin 18040006, at an elevation of about 6,630 feet, draining roughly 81 square miles.
- Can I use Big C below Huntington Lake, 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.