USGS Streamgage 11464000
Russian River near Healdsburg, CA
Russian River near Healdsburg, CA is USGS streamgage 11464000 in California, monitoring river discharge in hydrologic subbasin 18010110. It drains a watershed of about 793 square miles. Discharge records at this site go back to 1937. Typical flow runs near 175.5 cfs in July and 813.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 793 sq mi
- Gauge elevation
- 80 ft
- Subbasin (HUC-8)
- 18010110
- Coordinates
- 38.6132, -122.83634
- USGS site number
- 11464000
- Records begin
- 1937-12-01 (89 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 87 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 | 262.2 | 1,441.7 | 10,875.2 | |
| February | 376.8 | 1,716.6 | 10,311 | |
| March | 411.8 | 1,479.7 | 6,776.8 | |
| April | 269.1 | 813.3 | 3,095.7 | |
| May | 156.3 | 406.5 | 958 | |
| June | 95.1 | 219.4 | 441.7 | |
| July | 86.5 | 175.5 | 251.3 | |
| August | 89.1 | 164.7 | 243.1 | |
| September | 92.1 | 168.3 | 250 | |
| October | 100.3 | 184.2 | 347.5 | |
| November | 122.9 | 249.9 | 1,487.2 | |
| December | 150.9 | 670.1 | 6,898.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Russian River near Healdsburg, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 1,716.6 cfs, against 164.7 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 Russian River near Healdsburg, CA?
- It depends on the month. In January, half of days historically fall near 1,441.7 cfs, with the middle 80% of days between 262.2 and 10,875.2 cfs. The month-by-month table on this page gives the full range.
- How long has Russian River near Healdsburg, CA been measured?
- Discharge records at USGS site 11464000 begin in 1937, about 89 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 Russian River near Healdsburg, CA?
- The gauge sits at 38.6132, -122.83634, in California, in hydrologic subbasin 18010110, at an elevation of about 80 feet, draining roughly 793 square miles.
- Can I use Russian River near Healdsburg, 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.