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Twelvemile Creek near Petersburg, AK

River level and flood forecast · Petersburg County

Normal23.4 ftas of Tue 2:15 AM

Flow: 96 cubic feet per second (USGS).

The last 7 days and the forecast

2223242526WedThuFriSatSunMonTueNowObserved (ft)NWS forecast

NWS forecast issued Mon, Jan 1, 12 AM. Forecasts change as rain falls and as upstream water arrives.

Highest crests on record

  1. 29.04 ft — October 1, 2021
  2. 28.62 ft — September 26, 2025
  3. 28.5 ft — November 20, 2023
  4. 28 ft — August 12, 2023
  5. 13.03 ft — October 18, 1978

Recent crests: 28.62 ft (September 26, 2025) · 28.5 ft (November 20, 2023) · 28 ft (August 12, 2023) · 29.04 ft (October 1, 2021) · 13.03 ft (October 18, 1978)

Up and down the river, and nearby

See it on the live map →Radar & warnings for Petersburg CountyNWS gauge pageUSGS gauge 15087585

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (TMPA2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.