Rivermatics

USGS Streamgage 11260815

San Joaquin River near Stevinson, CA

San Joaquin River near Stevinson, CA is USGS streamgage 11260815 in California, monitoring river discharge in hydrologic subbasin 18040001. It drains a watershed of about 7,473 square miles. Discharge records at this site go back to 1985. Typical flow runs near 32.1 cfs in July and 167.3 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
California
Drainage area
7,473 sq mi
Gauge elevation
71 ft
Subbasin (HUC-8)
18040001
Coordinates
37.29513, -120.84362
USGS site number
11260815
Records begin
1985-10-25 (41 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 10 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 43.1 195.5 4,211.1
February 40.9 194.3 11,951.1
March 53.8 311.5 10,523.5
April 31.9 167.3 5,220
May 6.2 98.8 2,954.5
June 1.3 61.2 5,055
July 0.2 32.1 876.8
August 0.2 37.1 154.5
September 0.1 43 94.8
October 0.2 57.3 101.2
November 3.5 69.9 138.5
December 17.6 85.2 334.2

All values in cubic feet per second (cfs).

Common questions

When does San Joaquin River near Stevinson, CA normally run highest?
March, on the long-term record. The median daily flow that month is about 311.5 cfs, against 32.1 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 San Joaquin River near Stevinson, CA?
It depends on the month. In January, half of days historically fall near 195.5 cfs, with the middle 80% of days between 43.1 and 4,211.1 cfs. The month-by-month table on this page gives the full range.
How long has San Joaquin River near Stevinson, CA been measured?
Discharge records at USGS site 11260815 begin in 1985, about 41 years, covering roughly 3,289 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is San Joaquin River near Stevinson, CA?
The gauge sits at 37.29513, -120.84362, in California, in hydrologic subbasin 18040001, at an elevation of about 71 feet, draining roughly 7,473 square miles.
Can I use San Joaquin River near Stevinson, 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