Chester Creek at Arctic Blvd at Anchorage, AK

River level and flood forecast · Anchorage County

Normal2.9 ftas of Tue 3:15 AM

The river is 1.1 ft below flood stage (4 ft).

Forecast to hold near 2.9 ft through Thu, Oct 15, 6 AM.

Flow: 33 cubic feet per second (USGS).

The last 7 days and the forecast

23456WedThuFriSatSunMonTueWedThuAction 3.3 ftFlood 4 ftModerate 5 ftMajor 6 ftNowObserved (ft)NWS forecast

NWS forecast issued Mon, Oct 12, 8:31 PM. Forecasts change as rain falls and as upstream water arrives.

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Flood stages

Major flood stage6 ft
Moderate flood stage5 ft
Flood stage4 ft
Action stage3.3 ft
Record crest (September 21, 2012)5.88 ft

What floods at each level

From the National Weather Service, highest first.

  • 4 ftPortions of the Chester Creek Bike Path will get inundated, especially beneath the C St Bridge

Highest crests on record

  1. 5.88 ft — September 21, 2012
  2. 5.81 ft — January 16, 2009
  3. 5.56 ft — August 26, 1989
  4. 5.17 ft — August 16, 2023
  5. 5.16 ft — October 6, 2012

Recent crests: 5.17 ft (August 16, 2023) · 3.89 ft (September 20, 2019) · 3.94 ft (August 21, 2018) · 4.46 ft (August 13, 2017) · 3.92 ft (August 8, 2016)

Up and down the river, and nearby

Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (CHRA2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.