Tuolumne River near Hetch Hetchy water level

Name: Tuolumne River near Hetch Hetchy 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, Tuolumne River, California, United States

Directions

Normal for mid-October

Water level

2.94ft Steady over the last 24 hours

Measured Oct 20, 2026, 05:15 AM PDT (26 min ago)

Flow: 55.9 cfs
Water temperature: 51 °F

History

7 days

Water level

What this means

Water levels are unremarkable at Tuolumne River near Hetch Hetchy, where the gauge shows 2.94 ft.

The level has held steady over the past 24 hours. The 30-day range is 2.93 ft – 2.97 ft.

Fall is often low-water season on rivers, until steadier rain returns. The sensor also reports a water temperature of 51 °F.

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

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:13 AM Sunset 06:16 PM Daylight 11 hr, 3 min First quarter 68%

Map

Other gauges on the Tuolumne River

Gauge	Level	Compared with normal	24 hours	Distance
Tuolumne River above Early Intake near MatherRiver gauge, Tuolumne River	49.7 cfs	Normal	±0	9 mi
Tuolumne River below Early Intake near MatherRiver gauge, Tuolumne River	50.5 cfs	Normal	±0	10 mi
Tuolumne River below Lagrange Dam near LagrangeRiver gauge, Tuolumne River	214 cfs	Low	−300.0 cfs	40 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Eleanor Creek near Hetch HetchyRiver gauge, Eleanor Creek	10.6 cfs	Normal	−0.4 cfs	5.1 mi
Cherry Creek below Valley Dam near Hetch HetchyRiver gauge, Cherry Creek	6.9 cfs	Normal	±0	7 mi
Tuolumne R A Grand Canyon of Tuolumne above Hetch HetchyRiver gauge, Tuolumne R A Grand Canyon of Tuolumne	6.9 cfs	Low	±0	8 mi
Cherry Creek near Early IntakeRiver gauge, Cherry Creek	14.8 cfs	Normal	−0.4 cfs	9 mi
Cherry Creek below Dion R Holm Ph near MatherRiver gauge, Cherry Creek	18.0 cfs	Very low	±0	10 mi
Merced R A Pohono Bridge near YosemiteRiver gauge, Merced R A Pohono Bridge	0.95 ft	Below flood stage	+0.04 ft	17 mi
Merced R A Happy Isles Bridge near YosemiteRiver gauge, Merced R A Happy Isles Bridge	0.56 ft	Below flood stage	−0.01 ft	19 mi
Big Creek above Whites Gulch near GrovelandRiver gauge, Big Creek	0.0 cfs	Normal	±0	22 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 Tuolumne River near Hetch Hetchy today?

On Oct 20, 2026, 05:15 AM PDT, the water level was 2.94 ft. Steady over the last 24 hours.

Is Tuolumne River near Hetch Hetchy rising or falling?

Steady over the last 24 hours.

Is the level of Tuolumne River near Hetch Hetchy normal?

Normal 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:11276500 (Agency page)
Coordinates: 37.93741, -119.79820 (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	2.94 ft	2026-10-20 12:15	Provisional
Flow	55.9 cfs	2026-10-20 12:15	Provisional
Water temperature	51 °F	2026-10-20 12:00	Provisional

Download

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How to cite

U.S. Geological Survey: Tuolumne River near Hetch Hetchy (usgs:11276500). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/tuolumne-river-near-hetch-hetchy

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