Trinity R A Lewiston water level

Name: Trinity R A Lewiston 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, California, United States

Directions

High for mid-October

Water level

13.79ft Steady over the last 24 hours

Measured Oct 18, 2026, 06:30 PM PDT (19 min ago)

Flow: 305 cfs
Water temperature: 50 °F

History

7 days

Water level

What this means

High water at Trinity R A Lewiston: the latest reading is 13.79 ft, above normal for mid-October.

The level has held steady over the past 24 hours. The 30-day range is 13.77 ft – 14.04 ft.

That stands out in fall, when many rivers are usually near their lowest. The sensor also reports a water temperature of 50 °F.

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

Paddling and fishing conditions

Above-normal flows push fish to the edges and make wading risky. Wait for the river to drop and clear.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:27 AM Sunset 06:26 PM Daylight 10 hr, 59 min First quarter 54%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Lewiston LakeLake	1,901.07 ft	Normal		0.5 mi
Rush Creek near LewistonRiver gauge, Rush Creek	2.1 cfs	Low	±0	1.8 mi
Trinity LakeLake	2,315.34 ft	Normal		5.7 mi
Trinity River below Limekiln Gulch near Douglas CityRiver gauge, Trinity River	314 cfs	Normal	±0	7 mi
Indian Creek near Douglas CityRiver gauge, Indian Creek	3.7 cfs	Normal	±0	8 mi
Trinity R A Douglas CityRiver gauge	369 cfs	High	±0	10 mi
Trinity R A Junction CityRiver gauge	349 cfs	Normal	−4.0 cfs	14 mi
Whiskeytown LakeLake	1,208.70 ft	High		16 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 Trinity R A Lewiston today?

On Oct 18, 2026, 06:30 PM PDT, the water level was 13.79 ft. Steady over the last 24 hours.

Is Trinity R A Lewiston rising or falling?

Steady over the last 24 hours.

Is the level of Trinity R A Lewiston normal?

High 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:11525500 (Agency page)
Coordinates: 40.72472, -122.80111 (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	13.79 ft	2026-10-19 01:30	Provisional
Flow	305 cfs	2026-10-19 01:30	Provisional
Water temperature	50 °F	2026-10-19 01:30	Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

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How to cite

U.S. Geological Survey: Trinity R A Lewiston (usgs:11525500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/trinity-r-a-lewiston

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