USGS Streamgage 11176340
Arroyo de La Laguna A Corte Madrid near Pleasanton
Arroyo de La Laguna A Corte Madrid near Pleasanton is USGS streamgage 11176340 in California, monitoring river discharge in hydrologic subbasin 18050004. It drains a watershed of about 222 square miles. Discharge records at this site go back to 2022. Typical flow runs near 6.1 cfs in July and 31.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 222 sq mi
- Gauge elevation
- 290 ft
- Subbasin (HUC-8)
- 18050004
- Coordinates
- 37.66831, -121.90942
- USGS site number
- 11176340
- Records begin
- 2022-12-23 (4 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 3 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 | — | 60.8 | — | |
| February | — | 65.2 | — | |
| March | — | 86.3 | — | |
| April | — | 31.5 | — | |
| May | — | 14.8 | — | |
| June | — | 8.5 | — | |
| July | — | 6.1 | — | |
| August | — | 5.2 | — | |
| September | — | 5.4 | — | |
| October | — | 6.5 | — | |
| November | — | 19.1 | — | |
| December | — | 62 | — |
All values in cubic feet per second (cfs).
Common questions
- When does Arroyo de La Laguna A Corte Madrid near Pleasanton normally run highest?
- March, on the long-term record. The median daily flow that month is about 86.3 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.
- How long has Arroyo de La Laguna A Corte Madrid near Pleasanton been measured?
- Discharge records at USGS site 11176340 begin in 2022, about 4 years, covering roughly 1,313 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 Corte Madrid near Pleasanton?
- The gauge sits at 37.66831, -121.90942, in California, in hydrologic subbasin 18050004, at an elevation of about 290 feet, draining roughly 222 square miles.
- Can I use Arroyo de La Laguna A Corte Madrid near Pleasanton 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.