Rivermatics

USGS Streamgage 11230070

SF San Joaquin River Ab Hooper C near Florence Lake, CA

SF San Joaquin River Ab Hooper C near Florence Lake, CA is USGS streamgage 11230070 in California, monitoring river discharge in hydrologic subbasin 18040006. It drains a watershed of about 175 square miles. Discharge records at this site go back to 2009. Typical flow runs near 30.2 cfs in July and 26.4 cfs in April, with the higher of the two arriving in July.

View live conditions →

Gauge details

State
California
Drainage area
175 sq mi
Gauge elevation
7,210 ft
Subbasin (HUC-8)
18040006
Coordinates
37.29133, -118.95734
USGS site number
11230070
Records begin
2009-10-01 (17 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 16 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 12.8 16.5 33.9
February 13.4 17.4 32.2
March 14.1 20.2 40.4
April 14.7 26.4 52.4
May 22.1 36.8 323.1
June 22 37.4 2,850.7
July 21 30.2 1,233.9
August 21.2 27.5 50
September 20.5 27.7 34.1
October 15.1 19.5 39.7
November 14 16.8 73
December 14 15.1 45.1

All values in cubic feet per second (cfs).

Common questions

When does SF San Joaquin River Ab Hooper C near Florence Lake, CA normally run highest?
June, on the long-term record. The median daily flow that month is about 37.4 cfs, against 15.1 cfs in December, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for SF San Joaquin River Ab Hooper C near Florence Lake, CA?
It depends on the month. In January, half of days historically fall near 16.5 cfs, with the middle 80% of days between 12.8 and 33.9 cfs. The month-by-month table on this page gives the full range.
How long has SF San Joaquin River Ab Hooper C near Florence Lake, CA been measured?
Discharge records at USGS site 11230070 begin in 2009, about 17 years, covering roughly 5,844 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is SF San Joaquin River Ab Hooper C near Florence Lake, CA?
The gauge sits at 37.29133, -118.95734, in California, in hydrologic subbasin 18040006, at an elevation of about 7,210 feet, draining roughly 175 square miles.
Can I use SF San Joaquin River Ab Hooper C near Florence Lake, 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