USGS Streamgage 11406890
Richvale Cn A Intake near Oroville, CA
Richvale Cn A Intake near Oroville, CA is USGS streamgage 11406890 in California, monitoring river discharge in hydrologic subbasin 18020158. Discharge records at this site go back to 1968. Typical flow runs near 360.5 cfs in July and 48.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- California
- Subbasin (HUC-8)
- 18020158
- Coordinates
- 39.50516, -121.68609
- USGS site number
- 11406890
- Records begin
- 1968-05-01 (58 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 57 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 | 0 | 9.5 | 169.7 | |
| February | 0 | 0 | 0 | |
| March | 0 | 0 | 0 | |
| April | 0.7 | 48.3 | 151.3 | |
| May | 122.3 | 289.5 | 425.1 | |
| June | 184.7 | 315.1 | 408.6 | |
| July | 214.9 | 360.5 | 435.5 | |
| August | 170.4 | 292.8 | 376.4 | |
| September | 20.2 | 65.7 | 129 | |
| October | 0 | 72.6 | 257.4 | |
| November | 0 | 125.8 | 343.5 | |
| December | 0 | 81 | 283 |
All values in cubic feet per second (cfs).
Common questions
- When does Richvale Cn A Intake near Oroville, CA normally run highest?
- July, on the long-term record. The median daily flow that month is about 360.5 cfs, against 0 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Richvale Cn A Intake near Oroville, CA?
- It depends on the month. In January, half of days historically fall near 9.5 cfs, with the middle 80% of days between 0 and 169.7 cfs. The month-by-month table on this page gives the full range.
- How long has Richvale Cn A Intake near Oroville, CA been measured?
- Discharge records at USGS site 11406890 begin in 1968, about 58 years, covering roughly 8,820 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Richvale Cn A Intake near Oroville, CA?
- The gauge sits at 39.50516, -121.68609, in California, in hydrologic subbasin 18020158.
- Can I use Richvale Cn A Intake near Oroville, 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.
Other gauges in this subbasin
- Pge Lateral A Intake near Oroville, CA
- Butte C below Diversion Dam near Stirling City
- Butte C below Fks of Butte Diversion Dam near de Sabla, CA
- Butte C below Centerville Diversion Dam near Paradise, CA
- Toadtown Canal Ab Butte Canal near Stirling City, CA
- Butte C near Chico, CA
- Western Cn A Intake near Oroville, CA