USGS Streamgage 11241500
Stevenson C A Shaver Lake, CA
Stevenson C A Shaver Lake, CA is USGS streamgage 11241500 in California, monitoring river discharge in hydrologic subbasin 18040006. It drains a watershed of about 29 square miles. Discharge records at this site go back to 1916. Typical flow runs near 4.5 cfs in July and 4.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 29 sq mi
- Gauge elevation
- 5,200 ft
- Subbasin (HUC-8)
- 18040006
- Coordinates
- 37.14467, -119.30846
- USGS site number
- 11241500
- Records begin
- 1916-10-01 (110 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 109 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 | 1.4 | 3 | 9.7 | |
| February | 1.8 | 3.4 | 64.5 | |
| March | 1.8 | 3.9 | 209.5 | |
| April | 3.1 | 4.6 | 284.7 | |
| May | 3.3 | 5 | 310.5 | |
| June | 3.2 | 5.6 | 343.9 | |
| July | 3.1 | 4.5 | 306.8 | |
| August | 2.5 | 4 | 181.4 | |
| September | 1.7 | 3.9 | 9.1 | |
| October | 3.1 | 4.2 | 9.9 | |
| November | 2.3 | 3.7 | 8.1 | |
| December | 2.1 | 3 | 8.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Stevenson C A Shaver Lake, CA normally run highest?
- June, on the long-term record. The median daily flow that month is about 5.6 cfs, against 3 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 Stevenson C A Shaver Lake, CA?
- It depends on the month. In January, half of days historically fall near 3 cfs, with the middle 80% of days between 1.4 and 9.7 cfs. The month-by-month table on this page gives the full range.
- How long has Stevenson C A Shaver Lake, CA been measured?
- Discharge records at USGS site 11241500 begin in 1916, about 110 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 Stevenson C A Shaver Lake, CA?
- The gauge sits at 37.14467, -119.30846, in California, in hydrologic subbasin 18040006, at an elevation of about 5,200 feet, draining roughly 29 square miles.
- Can I use Stevenson C A Shaver 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.