USGS Streamgage 11462500
Russian River near Hopland, CA
Russian River near Hopland, CA is USGS streamgage 11462500 in California, monitoring river discharge in hydrologic subbasin 18010110. It drains a watershed of about 362 square miles. Discharge records at this site go back to 1937. Typical flow runs near 189.4 cfs in July and 422.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- California
- Drainage area
- 362 sq mi
- Gauge elevation
- 500 ft
- Subbasin (HUC-8)
- 18010110
- Coordinates
- 39.02653, -123.13053
- USGS site number
- 11462500
- 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 | 175.2 | 676.7 | 4,755.5 | |
| February | 193 | 817 | 4,353.8 | |
| March | 208 | 682.2 | 2,972.9 | |
| April | 150.9 | 422.7 | 1,473.9 | |
| May | 95.2 | 251.3 | 525.6 | |
| June | 92.8 | 191.9 | 302.4 | |
| July | 109.6 | 189.4 | 255.2 | |
| August | 114.6 | 191.7 | 260.6 | |
| September | 122 | 193.5 | 258.1 | |
| October | 111.6 | 192.8 | 316.3 | |
| November | 107.2 | 208.2 | 793.2 | |
| December | 112.9 | 351.4 | 2,998.4 |
All values in cubic feet per second (cfs).
Common questions
- When does Russian River near Hopland, CA normally run highest?
- February, on the long-term record. The median daily flow that month is about 817 cfs, against 189.4 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 Russian River near Hopland, CA?
- It depends on the month. In January, half of days historically fall near 676.7 cfs, with the middle 80% of days between 175.2 and 4,755.5 cfs. The month-by-month table on this page gives the full range.
- How long has Russian River near Hopland, CA been measured?
- Discharge records at USGS site 11462500 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 Hopland, CA?
- The gauge sits at 39.02653, -123.13053, in California, in hydrologic subbasin 18010110, at an elevation of about 500 feet, draining roughly 362 square miles.
- Can I use Russian River near Hopland, 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.