USGS Streamgage 11377100
Sacramento River Ab Bend Bridge near Red Bluff, CA
Sacramento River Ab Bend Bridge near Red Bluff, CA is USGS streamgage 11377100 in California, monitoring river discharge in hydrologic subbasin 18020155. It drains a watershed of about 8,900 square miles. Discharge records at this site go back to 1879. Typical flow runs near 13,138.7 cfs in July and 9,128.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- California
- Drainage area
- 8,900 sq mi
- Gauge elevation
- 288 ft
- Subbasin (HUC-8)
- 18020155
- Coordinates
- 40.28846, -122.18663
- USGS site number
- 11377100
- Records begin
- 1879-03-06 (147 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 63 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 | 4,814.2 | 8,635.5 | 41,541.9 | |
| February | 4,846.2 | 9,575.2 | 52,637.9 | |
| March | 5,216.8 | 9,316.1 | 40,800 | |
| April | 5,896.7 | 9,128.3 | 22,116.7 | |
| May | 8,054.5 | 10,709.7 | 17,558.1 | |
| June | 9,087.7 | 11,923.3 | 15,566.7 | |
| July | 10,050.3 | 13,138.7 | 15,371 | |
| August | 8,758.4 | 11,301.9 | 13,858.1 | |
| September | 6,205.7 | 8,362.3 | 10,610 | |
| October | 4,768.1 | 7,124.2 | 8,787.4 | |
| November | 4,635.7 | 6,676.3 | 13,219 | |
| December | 4,420.3 | 7,740 | 27,061.3 |
All values in cubic feet per second (cfs).
Common questions
- When does Sacramento River Ab Bend Bridge near Red Bluff, CA normally run highest?
- July, on the long-term record. The median daily flow that month is about 13,138.7 cfs, against 6,676.3 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Sacramento River Ab Bend Bridge near Red Bluff, CA?
- It depends on the month. In January, half of days historically fall near 8,635.5 cfs, with the middle 80% of days between 4,814.2 and 41,541.9 cfs. The month-by-month table on this page gives the full range.
- How long has Sacramento River Ab Bend Bridge near Red Bluff, CA been measured?
- Discharge records at USGS site 11377100 begin in 1879, about 147 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 Sacramento River Ab Bend Bridge near Red Bluff, CA?
- The gauge sits at 40.28846, -122.18663, in California, in hydrologic subbasin 18020155, at an elevation of about 288 feet, draining roughly 8,900 square miles.
- Can I use Sacramento River Ab Bend Bridge near Red Bluff, 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.