USGS Streamgage 11109395
Canada de Los Alamos Ab Pyramid Lake, CA
Canada de Los Alamos Ab Pyramid Lake, CA is USGS streamgage 11109395 in California, monitoring river discharge in hydrologic subbasin 18070102. It drains a watershed of about 62 square miles. Discharge records at this site go back to 1976. Typical flow runs near 1.7 cfs in July and 3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 62 sq mi
- Subbasin (HUC-8)
- 18070102
- Coordinates
- 34.69193, -118.7912
- USGS site number
- 11109395
- Records begin
- 1976-10-01 (50 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 44 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 | 2.2 | 3.3 | 6.1 | |
| February | 1.9 | 3.4 | 8.3 | |
| March | 2.1 | 3.4 | 7.2 | |
| April | 1.7 | 3 | 4.6 | |
| May | 1.4 | 2.4 | 3.7 | |
| June | 1.1 | 2 | 3 | |
| July | 1 | 1.7 | 2.6 | |
| August | 1.2 | 1.7 | 2.7 | |
| September | 1.3 | 1.9 | 2.8 | |
| October | 1.4 | 2.3 | 3.2 | |
| November | 1.7 | 2.7 | 3.6 | |
| December | 1.9 | 3 | 4.2 |
All values in cubic feet per second (cfs).
Common questions
- When does Canada de Los Alamos Ab Pyramid Lake, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 3.4 cfs, against 1.7 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Canada de Los Alamos Ab Pyramid Lake, CA?
- It depends on the month. In January, half of days historically fall near 3.3 cfs, with the middle 80% of days between 2.2 and 6.1 cfs. The month-by-month table on this page gives the full range.
- How long has Canada de Los Alamos Ab Pyramid Lake, CA been measured?
- Discharge records at USGS site 11109395 begin in 1976, about 50 years, covering roughly 6,690 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Canada de Los Alamos Ab Pyramid Lake, CA?
- The gauge sits at 34.69193, -118.7912, in California, in hydrologic subbasin 18070102, draining roughly 62 square miles.
- Can I use Canada de Los Alamos Ab Pyramid 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.