Juneau officials review response to glacial lake outburst; Army Corps study, longer-term work next

City and Borough of Juneau officials on Aug. 18 updated the Assembly on their response to a 2025 glacial lake outburst flood, saying a unified command led by tribal and city emergency staff coordinated dozens of partner agencies to protect neighborhoods but that seepage and a localized HESCO barrier failure caused property impacts and exposed remaining vulnerabilities.

The unified command, hosted at the Tlingit and Haida Public Safety Facility, included about 60 responders from the city and borough, tribal partners, the Alaska Department of Transportation and other agencies, officials said. "Tlingit and Haida was honored to host, at our Public Safety Building. That meant around 60 different responders," said Sabrina Grubitz, the Tlingit and Haida public safety manager, who served as an incident commander.

Why it matters: officials said the temporary HESCO barriers prevented a wider disaster but are not a long-term fix. City staff and the Army Corps of Engineers are pursuing an engineering and funding path for a Phase 2 project and an eventual enduring solution; both will require more data, hydrologic modeling and federal funding. The assembly heard preliminary cost and damage estimates and was told more months of work are needed before recommended construction or financing decisions are ready.

Officials said the river crest during this event reached about 16.65 feet. Incident commanders and staff described the HESCO barriers as holding back most flow from the…