Rivermatics

USGS Streamgage 11253115

San Joaquin River below Chowchilla Cn Intake near Mendota

San Joaquin River below Chowchilla Cn Intake near Mendota is USGS streamgage 11253115 in California, monitoring river discharge in hydrologic subbasin 18040001. It drains a watershed of about 1,822 square miles. Discharge records at this site go back to 2010. Typical flow runs near 120.3 cfs in July and 132.1 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
California
Drainage area
1,822 sq mi
Gauge elevation
170 ft
Subbasin (HUC-8)
18040001
Coordinates
36.77375, -120.286
USGS site number
11253115
Records begin
2010-10-01 (16 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 12 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 0 182.7 816
February 0 165 1,104.8
March 0 150.2 1,345.9
April 0 132.1 802.8
May 0 237.9 1,307
June 0 126.3 1,463
July 2.1 120.3 1,101.9
August 6.7 132.1 862.4
September 1.6 105 665.5
October 0 103.2 217.4
November 0 144.6 301.3
December 0 139.6 218.5

All values in cubic feet per second (cfs).

Common questions

When does San Joaquin River below Chowchilla Cn Intake near Mendota normally run highest?
May, on the long-term record. The median daily flow that month is about 237.9 cfs, against 103.2 cfs in October, 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 below Chowchilla Cn Intake near Mendota?
It depends on the month. In January, half of days historically fall near 182.7 cfs, with the middle 80% of days between 0 and 816 cfs. The month-by-month table on this page gives the full range.
How long has San Joaquin River below Chowchilla Cn Intake near Mendota been measured?
Discharge records at USGS site 11253115 begin in 2010, about 16 years, covering roughly 4,198 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is San Joaquin River below Chowchilla Cn Intake near Mendota?
The gauge sits at 36.77375, -120.286, in California, in hydrologic subbasin 18040001, at an elevation of about 170 feet, draining roughly 1,822 square miles.
Can I use San Joaquin River below Chowchilla Cn Intake near Mendota 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