USGS Streamgage 11214540
Helms Pp near Wishon Re, CA
Helms Pp near Wishon Re, CA is USGS streamgage 11214540 in California, monitoring river discharge in hydrologic subbasin 18030010. Discharge records at this site go back to 1989. Typical flow runs near 255.8 cfs in July and -31.2 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- California
- Subbasin (HUC-8)
- 18030010
- Coordinates
- 37.03939, -118.95539
- USGS site number
- 11214540
- Records begin
- 1989-10-01 (37 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 36 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 | -755.8 | 91.6 | 1,131.6 | |
| February | -731.4 | 57.6 | 1,126.2 | |
| March | -703 | 16.9 | 924.9 | |
| April | -1,049 | -31.2 | 949.6 | |
| May | -1,520 | -225.9 | 1,050.7 | |
| June | -1,006 | 92.8 | 1,329.8 | |
| July | -754.9 | 255.8 | 1,231.2 | |
| August | -605.9 | 319.8 | 1,571.3 | |
| September | -675.6 | 236.6 | 1,439.2 | |
| October | -714.9 | 59.4 | 987.8 | |
| November | -926.6 | -0.4 | 959.6 | |
| December | -818.9 | 38 | 1,099.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Helms Pp near Wishon Re, CA normally run highest?
- August, on the long-term record. The median daily flow that month is about 319.8 cfs, against -225.9 cfs in May, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Helms Pp near Wishon Re, CA?
- It depends on the month. In January, half of days historically fall near 91.6 cfs, with the middle 80% of days between -755.8 and 1,131.6 cfs. The month-by-month table on this page gives the full range.
- How long has Helms Pp near Wishon Re, CA been measured?
- Discharge records at USGS site 11214540 begin in 1989, about 37 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 Helms Pp near Wishon Re, CA?
- The gauge sits at 37.03939, -118.95539, in California, in hydrologic subbasin 18030010.
- Can I use Helms Pp near Wishon Re, 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.