Twelvemile Creek near Petersburg water level

Name: Twelvemile Creek near Petersburg 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, Twelvemile Creek, Alaska, United States

Directions

Very high for mid-October

Water level

25.46ft Up 2.48 ft over the last 24 hours

Measured Oct 20, 2026, 10:15 PM AKDT (1 hour ago)

Flow: 503 cfs
Water temperature: 45 °F

History

7 days

Water level

What this means

High water at Twelvemile Creek near Petersburg: the latest reading is 25.46 ft, well above normal for mid-October.

The record high is 29.04 ft, set on October 1, 2021.

It is on the way up, by 2.48 ft over the past 24 hours. If the rise continues, low-lying paths and riverside parking can go under water. The 30-day range is 22.96 ft – 28.79 ft.

That stands out in fall, when many rivers are usually near their lowest. The water temperature at the gauge is 45 °F.

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

Key numbers

Highest on record: 29.04 ftOctober 1, 2021

Staying safe in high water

Flood stage is only the first threshold. Above it the National Weather Service sets moderate and major flood stages, and the forecast crest tells you which of those the river is expected to reach.

Upstream gauges on the same river usually show a rise first, which is a useful early warning.

Highest crests on record

Rank	Level	Date
1	29.04 ft	October 1, 2021
2	28.62 ft	September 26, 2025
3	28.50 ft	November 20, 2023
4	28.00 ft	August 12, 2023
5	13.03 ft	October 18, 1978
6	12.12 ft	February 20, 1973
7	11.50 ft	November 2, 1976
8	11.30 ft	October 8, 1974
9	10.83 ft	September 9, 1976
10	10.67 ft	October 27, 1973

Weather at the gauge

Rain in the last 3 days: 1.28 in. Rain that falls upstream can take hours or days to show up at a river gauge.

20 Tue 48° 43° 1.57 in, 100% Wind 20 mph

21 Wed 44° 38° 0.56 in, 100% Wind 10 mph

22 Thu 42° 37° 0.69 in, 93% Wind 8 mph

23 Fri 45° 35° 0.15 in, 62% Wind 3 mph

24 Sat 42° 34° – Wind 3 mph

25 Sun 45° 35° – Wind 3 mph

26 Mon 43° 35° – Wind 4 mph

Forecast: Open-Meteo

Sunrise 07:39 AM Sunset 05:36 PM Daylight 9 hr, 57 min Waxing gibbous 75%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Stikine River near WrangellRiver gauge, Stikine River	13.27 ft	Below flood stage	−0.34 ft	40 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 Twelvemile Creek near Petersburg today?

On Oct 20, 2026, 10:15 PM AKDT, the water level was 25.46 ft. Up 2.48 ft over the last 24 hours.

Is Twelvemile Creek near Petersburg rising or falling?

Up 2.48 ft over the last 24 hours.

Is the level of Twelvemile Creek near Petersburg normal?

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

What is the highest water level ever recorded at Twelvemile Creek near Petersburg?

The highest level on record is 29.04 ft on October 1, 2021.

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:15087585 (Agency page)
Coordinates: 56.96861, -133.06806 (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	25.46 ft	2026-10-21 06:15	Provisional
Flow	503 cfs	2026-10-21 06:15	Provisional
Water temperature	45 °F	2026-10-21 06:15	Provisional

Download

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How to cite

U.S. Geological Survey: Twelvemile Creek near Petersburg (usgs:15087585). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/alaska/twelvemile-creek-near-petersburg

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