USGS Streamgage 10308794
Bryant C below Mountaineer C near Markleeville, CA
Bryant C below Mountaineer C near Markleeville, CA is USGS streamgage 10308794 in California, monitoring river discharge in hydrologic subbasin 16050201. It drains a watershed of about 21 square miles. Discharge records at this site go back to 1998. Typical flow runs near 1.2 cfs in July and 5.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 21 sq mi
- Gauge elevation
- 6,249 ft
- Subbasin (HUC-8)
- 16050201
- Coordinates
- 38.73573, -119.64543
- USGS site number
- 10308794
- Records begin
- 1998-11-07 (28 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 28 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 | 1.2 | 2.1 | 4.9 | |
| February | 1.4 | 2.3 | 5.7 | |
| March | 1.8 | 4.5 | 16.5 | |
| April | 1.7 | 5.1 | 39.2 | |
| May | 1.3 | 3 | 29.5 | |
| June | 0.9 | 1.7 | 8.1 | |
| July | 0.7 | 1.2 | 3.7 | |
| August | 0.6 | 1 | 2.9 | |
| September | 0.7 | 1.1 | 2.8 | |
| October | 0.9 | 1.3 | 2.9 | |
| November | 1.1 | 1.6 | 3 | |
| December | 1.1 | 1.7 | 3.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Bryant C below Mountaineer C near Markleeville, CA normally run highest?
- April, on the long-term record. The median daily flow that month is about 5.1 cfs, against 1 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Bryant C below Mountaineer C near Markleeville, CA?
- It depends on the month. In January, half of days historically fall near 2.1 cfs, with the middle 80% of days between 1.2 and 4.9 cfs. The month-by-month table on this page gives the full range.
- How long has Bryant C below Mountaineer C near Markleeville, CA been measured?
- Discharge records at USGS site 10308794 begin in 1998, about 28 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 Bryant C below Mountaineer C near Markleeville, CA?
- The gauge sits at 38.73573, -119.64543, in California, in hydrologic subbasin 16050201, at an elevation of about 6,249 feet, draining roughly 21 square miles.
- Can I use Bryant C below Mountaineer C near Markleeville, 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.