USGS Streamgage 11176900
Arroyo de La Laguna A Verona, CA
Arroyo de La Laguna A Verona, CA is USGS streamgage 11176900 in California, monitoring river discharge in hydrologic subbasin 18050004. It drains a watershed of about 403 square miles. Discharge records at this site go back to 1912. Typical flow runs near 12.3 cfs in July and 25.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 403 sq mi
- Gauge elevation
- 260 ft
- Subbasin (HUC-8)
- 18050004
- Coordinates
- 37.6266, -121.88301
- USGS site number
- 11176900
- Records begin
- 1912-04-01 (114 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 57 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 | 9.2 | 30.8 | 563.6 | |
| February | 10 | 38.3 | 787.6 | |
| March | 9.5 | 40.7 | 476.4 | |
| April | 7.5 | 25.6 | 151.7 | |
| May | 6 | 16.9 | 46.9 | |
| June | 3.5 | 12.6 | 35.1 | |
| July | 2.8 | 12.3 | 31.9 | |
| August | 2.6 | 11.1 | 30.5 | |
| September | 3 | 10.8 | 29.5 | |
| October | 3.4 | 11.5 | 43.9 | |
| November | 5 | 15.2 | 75.8 | |
| December | 8.5 | 22.9 | 221.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Arroyo de La Laguna A Verona, CA normally run highest?
- March, on the long-term record. The median daily flow that month is about 40.7 cfs, against 10.8 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 Arroyo de La Laguna A Verona, CA?
- It depends on the month. In January, half of days historically fall near 30.8 cfs, with the middle 80% of days between 9.2 and 563.6 cfs. The month-by-month table on this page gives the full range.
- How long has Arroyo de La Laguna A Verona, CA been measured?
- Discharge records at USGS site 11176900 begin in 1912, about 114 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 Arroyo de La Laguna A Verona, CA?
- The gauge sits at 37.6266, -121.88301, in California, in hydrologic subbasin 18050004, at an elevation of about 260 feet, draining roughly 403 square miles.
- Can I use Arroyo de La Laguna A Verona, 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.