Mf San Joaquin River near Mammoth Lakes water level

Name: Mf San Joaquin River near Mammoth Lakes water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Mf San Joaquin River, California, United States

Directions

Low for mid-October

Water level

2.45ft Steady over the last 24 hours

Measured Oct 20, 2026, 08:00 PM PDT (26 min ago)

Flow: 5.4 cfs
Water temperature: 47 °F

History

7 days

Water level

What this means

The Mf San Joaquin River near Mammoth Lakes is running below normal at 2.45 ft.

It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. In the last month it has stayed between 2.45 ft and 2.47 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that. The water temperature at the gauge is 47 °F.

Compared with 5 years of daily readings for this time of year. How to read levels

Floating and fishing near Mf San Joaquin River near Mammoth Lakes

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Weather at the gauge

No rain in the last 3 days.

20 Tue 56° 35° – Wind 17 mph

21 Wed 60° 32° 0.29 in, 68% Wind 17 mph

22 Thu 44° 31° 0.11 in, 83% Wind 11 mph

23 Fri 52° 27° – Wind 8 mph

24 Sat 51° 27° – Wind 8 mph

25 Sun 59° 32° – Wind 6 mph

26 Mon 64° 36° – Wind 5 mph

Forecast: Open-Meteo

Sunrise 07:11 AM Sunset 06:12 PM Daylight 11 hr, 1 min Waxing gibbous 74%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Deadman C A Big Springs near CrestviewRiver gauge, Deadman C A Big Springs	20.1 cfs	Low	±0	11 mi
Hot C A Flume near Mammoth LakesRiver gauge, Hot C A Flume	37.0 cfs	Normal	+0.6 cfs	15 mi
Merced R A Happy Isles Bridge near YosemiteRiver gauge, Merced R A Happy Isles Bridge	0.56 ft	Below flood stage	±0	27 mi
Merced R A Pohono Bridge near YosemiteRiver gauge, Merced R A Pohono Bridge	0.95 ft	Below flood stage	−0.02 ft	32 mi
Tuolumne R A Grand Canyon of Tuolumne above Hetch HetchyRiver gauge, Tuolumne R A Grand Canyon of Tuolumne	6.9 cfs	Low	±0	37 mi
Green Creek near BridgeportRiver gauge, Green Creek	1.95 ft	Below flood stage	±0	38 mi
Virginia Creek near BridgeportRiver gauge, Virginia Creek	1.41 ft	Below flood stage	±0	39 mi
Lower Twin Lake near BridgeportLake, Lower Twin Lake	7,192.79 ft	No reference yet	±0	39 mi

Questions and answers

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Mf San Joaquin River near Mammoth Lakes today?

On Oct 20, 2026, 08:00 PM PDT, the water level was 2.45 ft. Steady over the last 24 hours.

Is Mf San Joaquin River near Mammoth Lakes rising or falling?

Steady over the last 24 hours.

Is the level of Mf San Joaquin River near Mammoth Lakes normal?

Low for mid-October. Compared with 5 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:11224000 (Agency page)
Coordinates: 37.63194, -119.08639 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	2.45 ft	2026-10-21 03:00	Provisional
Flow	5.4 cfs	2026-10-21 03:00	Provisional
Water temperature	47 °F	2026-10-21 03:00	Provisional

Download

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How to cite

U.S. Geological Survey: Mf San Joaquin River near Mammoth Lakes (usgs:11224000). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/mf-san-joaquin-river-near-mammoth-lakes

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer