CBJ Alerts

UPDATE: Mendenhall Lake Levels Reach Crest, Basin Release Concludes

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155 Heritage Way  ▪  Juneau, Alaska  99801  ▪  907-586-5240 


INFORMATION RELEASE
September 15, 2025
 

UPDATE: Mendenhall Lake Levels Reach Crest, Basin Release Concludes
 
The National Weather Service (NWS) has observed that the Mendenhall Lake level has crested following a glacial lake outburst of Suicide Basin. The crest reached 9.6 feet at approximately 7:30 p.m. on September 15, 2025.

The NWS will be reviewing available data to understand this event and the associated forecast. More information regarding the basin release is available at www.weather.gov/ajk/suicidebasin.

CBJ and our partners appreciate the community's quick action and preparedness efforts in response to this and future events.

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For questions related to today’s glacial lake outburst, contact juneau.weather@noaa.gov.
For questions related to CBJ’s response and ongoing flood preparedness efforts, contact floodresponse@juneau.gov.

 
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