Rivermatics

USGS Streamgage 11261500

San Joaquin River A Fremont Ford Bridge, CA

San Joaquin River A Fremont Ford Bridge, CA is USGS streamgage 11261500 in California, monitoring river discharge in hydrologic subbasin 18040001. It drains a watershed of about 7,615 square miles. Discharge records at this site go back to 1937. Typical flow runs near 158.6 cfs in July and 281.1 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
California
Drainage area
7,615 sq mi
Gauge elevation
-1 ft
Subbasin (HUC-8)
18040001
Coordinates
37.30991, -120.931
USGS site number
11261500
Records begin
1937-02-18 (89 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 41 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 99.5 278.5 3,444.8
February 138.1 312.8 2,464.8
March 193.8 438.8 8,381
April 127.3 281.1 9,624.3
May 66.4 234.7 4,489.4
June 57.3 179.3 5,161.3
July 36.5 158.6 1,159.1
August 34.7 144.2 375.4
September 27.1 113.4 288.2
October 29.4 138.2 277.8
November 67.4 193.5 294.5
December 84 200.7 461.7

All values in cubic feet per second (cfs).

Common questions

When does San Joaquin River A Fremont Ford Bridge, CA normally run highest?
March, on the long-term record. The median daily flow that month is about 438.8 cfs, against 113.4 cfs in September, 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 A Fremont Ford Bridge, CA?
It depends on the month. In January, half of days historically fall near 278.5 cfs, with the middle 80% of days between 99.5 and 3,444.8 cfs. The month-by-month table on this page gives the full range.
How long has San Joaquin River A Fremont Ford Bridge, CA been measured?
Discharge records at USGS site 11261500 begin in 1937, about 89 years, covering roughly 9,071 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is San Joaquin River A Fremont Ford Bridge, CA?
The gauge sits at 37.30991, -120.931, in California, in hydrologic subbasin 18040001, at an elevation of about -1 feet, draining roughly 7,615 square miles.
Can I use San Joaquin River A Fremont Ford Bridge, 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