Rivermatics

USGS Streamgage 11224000

MF San Joaquin River near Mammoth Lakes, CA

MF San Joaquin River near Mammoth Lakes, CA is USGS streamgage 11224000 in California, monitoring river discharge in hydrologic subbasin 18040006. It drains a watershed of about 44 square miles. Discharge records at this site go back to 2009. Typical flow runs near 67 cfs in July and 156.4 cfs in April, with the higher of the two arriving in April.

View live conditions →

Gauge details

State
California
Drainage area
44 sq mi
Gauge elevation
7,570 ft
Subbasin (HUC-8)
18040006
Coordinates
37.63194, -119.08639
USGS site number
11224000
Records begin
2009-10-27 (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 9.2 22.5 176.2
February 14.6 30.9 98.4
March 22.7 45.2 102.6
April 61.4 156.4 333.1
May 141.6 317.9 853.5
June 87 227 1,168.1
July 27.7 67 705.8
August 11 29 176.4
September 5.4 12.6 72.3
October 4.9 10.3 117.8
November 5.4 15 72
December 8.2 17.4 72.3

All values in cubic feet per second (cfs).

Common questions

When does MF San Joaquin River near Mammoth Lakes, CA normally run highest?
May, on the long-term record. The median daily flow that month is about 317.9 cfs, against 10.3 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 MF San Joaquin River near Mammoth Lakes, CA?
It depends on the month. In January, half of days historically fall near 22.5 cfs, with the middle 80% of days between 9.2 and 176.2 cfs. The month-by-month table on this page gives the full range.
How long has MF San Joaquin River near Mammoth Lakes, CA been measured?
Discharge records at USGS site 11224000 begin in 2009, about 17 years, covering roughly 5,963 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is MF San Joaquin River near Mammoth Lakes, CA?
The gauge sits at 37.63194, -119.08639, in California, in hydrologic subbasin 18040006, at an elevation of about 7,570 feet, draining roughly 44 square miles.
Can I use MF San Joaquin River near Mammoth Lakes, 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