The future of Juneau’s glacial lake outburst flood was explored at a University of Alaska Southeast Evening The glacial lake outburst floods occur when the basin fills to the point where the ice dam releases. “We didn’t have outburst floods, Mendenhall’s retreating and thinning, now we have outburst floods,” Lake Flood Dashboard on Friday, Oct. 10, 2025. Now their knowledge can provide groundwork for the entire state: an Alaska Glacial Lake Flood Dashboard

flooding solution for the Mendenhall Valley was the subject of a U.S. Glacial lake outburst floods have occurred annually since 2011, but have risen to record levels each He said it’s remarkable that no one has been killed during past outbursts. U.S. Sen. on robust flood fighting. and is the most likely option to reduce flood risk without displacing people from their homes. 

Borough of Juneau photo) (City and Borough of Juneau press release) Juneau residents impacted by the glacial lake outburst flood (GLOF) are invited to attend an open house on Tuesday, June 9, in the Thunder Mountain questions, sign up to volunteer, and learn about upcoming sandbag distribution activities before the flood For more information about 2026 GLOF preparedness efforts, email floodresponse@juneau.gov.

Several Glacial Lake Outburst Flood (GLOF) mitigation topics will be presented by local experts and federal

unanimously approved a local emergency declaration on Thursday afternoon in anticipation of this year’s glacial lake outburst flood. The resolution acknowledges Suicide Basin has released outburst floods since 2011, with record flood events of this scale have caused riverbank collapse, major flooding, residential evacuations, property barriers, the resolution notes the city “is committed to proactive, coordinated flood preparation and

5 miles up the mountains, has broken through the glacier again and a glacial lake outburst flood is the potential for damage to downstream ecosystems and infrastructure from glacial lake outburst floods A recent study found that glacial lake outburst floods from moraine-dammed lakes are occurring at an More than 15 million people globally live in areas at risk of glacial lake outburst floods. And they create hazards, such as the outburst floods that originate from glacial lakes.

(City and Borough of Juneau photo) In anticipation of a potential 2025 glacial lake outburst flood (GLOF ’s Suicide Basin and recent flood events that have affected homes, infrastructure, and traditional lands timely updates, and improve response coordination in the event of a flood. information—especially during high-stress situations like a flood,” said City Manager Katie Koester. Check in with the Juneau Flood Ready website at bit.ly/JuneauFloodReady 3.

A glacial outburst flood is underway on the Taku River south of Juneau. Although water that was held back by glacial ice is draining out of Lake No Lake, the National Weather

Glacial lake outburst events caused a spike in the water levels of the Taku River in early July and are The National Weather Service issued a flood advisory for the area around Salmon River near Hyder on Wednesday

A map shows areas of the Mendenhall Valley that would be affected by a glacial lake outburst flood without A table shows annual probabilities for glacial lake outburst flood flow levels from Suicide Basin, according to complete barrier installations and repairs before the 2026 glacial lake outburst flood. Glacial lake outburst floods from Suicide Basin have been an annual occurrence since 2011, but scientists The next major milestone for a Mendenhall glacial lake outburst flood technical study is the submission

outburst flood solution for the U.S. She said the failure of a lake dam could trigger a flash flood worse than the glacial outburst flood lake and the basin, that failure would revert to the original risk of the current flood.  since glacier melting caused by climate change means flooding may continue to be an annual threat  for longer we have to flood fight,” Koch said.

lake outburst floods on Monday, Feb. 23, 2026. She said it’s likely NRCS may only cover the home that has experienced repetitive flooding, meaning there lake outburst flood. The program will also expect that flood hazards be mitigated before this year’s outburst, which has occurred The EWP program would use the appraised value before the 2024 flood, which is likely higher.