flooding

Land and marine hazards released by the National Weather Service were updated Monday, Sept. 22. (National Weather Service screenshot)

High winds in Juneau today, flood warning expected through Tuesday

Two landslides along Auke Lake Trail prompted the trail’s closure on Saturday

 

Trees standing in water on the flooded shore of Mendenhall Lake are pictured from the Mendenhall Glacier Visitor’s Center on Sept. 15, 2025, in Juneau, Alaska. (Chloe Anderson for the Juneau Empire)

Updated: Flood warning canceled as Suicide Basin release comes to an end

Mendenhall Lake observed a crest of 9.6 feet as of 7 p.m.

 

In this screengrab, City and Borough of Juneau project managers for the HESCO barrier project — Carleton Shorey, Nick Druyvestein and Jeffrey Thole — speak during a Thursday, Aug. 14, 2025, press conference in the aftermath of the 2025 GLOF.

Unified Command switches from response to recovery in aftermath of flooding

The community will start to see preliminary damage assessment teams in affected neighborhoods

In this screengrab, City and Borough of Juneau project managers for the HESCO barrier project — Carleton Shorey, Nick Druyvestein and Jeffrey Thole — speak during a Thursday, Aug. 14, 2025, press conference in the aftermath of the 2025 GLOF.
As of 12:45 p.m. Wednesday, Aug. 13, 2025, the Mendenhall River height was 10.78 feet and falling. (National Weather Service)
As of 12:45 p.m. Wednesday, Aug. 13, 2025, the Mendenhall River height was 10.78 feet and falling. (National Weather Service)
A flood inundation map shows areas in Juneau's Mendenhall Valley that are urged to evacuate during the 2025 annual glacial outburst flooding event, which is estimated to have begun Monday evening and expected to crest Wednesday afternoon.
A flood inundation map shows areas in Juneau's Mendenhall Valley that are urged to evacuate during the 2025 annual glacial outburst flooding event, which is estimated to have begun Monday evening and expected to crest Wednesday afternoon.
The Mendenhall river is pictured from Botherhood Bridge on Aug. 11, 2025. (Chloe Anderson for the Juneau Empire)

CBJ, CCFR and others share flood preparedness updates ahead of expected annual flood event

Due to an atmospheric river the Juneau area experienced this weekend, both lake and river levels have risen

The Mendenhall river is pictured from Botherhood Bridge on Aug. 11, 2025. (Chloe Anderson for the Juneau Empire)
A screenshot from the USGS monitoring location of the basin shows the status of the area as of Aug. 11, 2025.

Suicide Basin reaches capacity; CBJ urges residents in inundation zone to prep for evacuation

In the past, it has taken up to six days for the outburst flooding event to begin after reaching this point

A screenshot from the USGS monitoring location of the basin shows the status of the area as of Aug. 11, 2025.
Alaska National Guard courtesy photo
Multiple homes and roads are seen inundated in the Mendenhall Glacier Basin following an Aug. 6, 2024, outburst flood from the Mendenhall Glacier.

Alaskans work to analyze and reduce risks of glacial outburst flooding

As residents of Juneau use new information to gird for near-annual floods, scientists are studying glacier dynamics to better understand what the future holds

Alaska National Guard courtesy photo
Multiple homes and roads are seen inundated in the Mendenhall Glacier Basin following an Aug. 6, 2024, outburst flood from the Mendenhall Glacier.
The Mendenhall River roars more than 13 feet above normal levels in August 2023. (Mark Sabbatini / Juneau Empire)

Suicide Basin predicted to fill by Aug. 8

The change in the prediction of when the basin will fill was based on heavy rain last week

The Mendenhall River roars more than 13 feet above normal levels in August 2023. (Mark Sabbatini / Juneau Empire)
Suicide Basin as of 10:01 a.m. on Thursday, July 10, 2025, taken by a U.S. Geological Survey camera at the basin entrance facing northeast, into the basin. (Screenshot from National Weather Service Juneau page)

Glacial lake outburst swells Salmon River near Hyder

The isolation of Salmon River limits the impact of flooding

Suicide Basin as of 10:01 a.m. on Thursday, July 10, 2025, taken by a U.S. Geological Survey camera at the basin entrance facing northeast, into the basin. (Screenshot from National Weather Service Juneau page)
Mendenhall Valley residents fill sandbags at the sandbag pickup/open house event on Saturday, June 7, 2025, at Thunder Mountain Middle School. (Ellie Ruel / Juneau Empire)

Residents pick up sandbags and flood safety tips

CBJ, Tlingit and Haida host flood preparation event.

Mendenhall Valley residents fill sandbags at the sandbag pickup/open house event on Saturday, June 7, 2025, at Thunder Mountain Middle School. (Ellie Ruel / Juneau Empire)
Attendees chat before the Juneau Flood Preparedness Workshop at the Mendenhall Valley Public Library on Saturday, June 7, 2025. (Ellie Ruel / Juneau Empire)

Flood preparation event offers resources, community support

Locals express frustration and anxiety, explore resources at Lions Club workshop.

Attendees chat before the Juneau Flood Preparedness Workshop at the Mendenhall Valley Public Library on Saturday, June 7, 2025. (Ellie Ruel / Juneau Empire)
Monitoring equipment at Suicide Basin was turned back on by the U.S. Geological Survey on Sunday, May 4, 2025. (Photo courtesy of Jamie Pierce)

UAS releases Juneau Glacial Flood Dashboard to help community plan for flooding

Website provides forecasting, depths of inundation maps and explains why glacial outbursts occur.

Monitoring equipment at Suicide Basin was turned back on by the U.S. Geological Survey on Sunday, May 4, 2025. (Photo courtesy of Jamie Pierce)
Adam Telle, nominee for assistant secretary of the Army for civil works, answers questions during a confirmation hearing this week. (Senate Armed Services Committee photo)

Trump’s nominee to head Army Corps of Engineers vows ‘expedited’ fix for Juneau’s glacial outburst floods

Adam Telle says “it’s going to require creativity,” without offering a specific timeline, at confirmation hearing.

Adam Telle, nominee for assistant secretary of the Army for civil works, answers questions during a confirmation hearing this week. (Senate Armed Services Committee photo)
Phase One of the HESCO barriers ends in the backyard of this residence on Rivercourt Way on Monday, May 12, 2025. The next extension, Phase One A, will install the barriers along the river adjacent to Dimond Park from the end of Rivercourt Way, interconnecting through a gap in the back fence. (Jasz Garrett / Juneau Empire)

Juneau Assembly approves extending HESCO barriers

After reviewing flood-fighting inundation maps, additional short-term mitigation deemed necessary.

Phase One of the HESCO barriers ends in the backyard of this residence on Rivercourt Way on Monday, May 12, 2025. The next extension, Phase One A, will install the barriers along the river adjacent to Dimond Park from the end of Rivercourt Way, interconnecting through a gap in the back fence. (Jasz Garrett / Juneau Empire)
A collage of the flood inundation maps shows eight feet without barriers, 16 feet with barriers, 18 feet with barriers, and 20 feet without barriers. The study by Michael Baker International considers the Mendenhall River’s changed topography. (Maps provided by City and Borough of Juneau)
Video

Updated flood-fighting inundation maps show effectiveness of HESCO barriers

Maps show worst-case scenarios, future flood potential continues to be studied.

A collage of the flood inundation maps shows eight feet without barriers, 16 feet with barriers, 18 feet with barriers, and 20 feet without barriers. The study by Michael Baker International considers the Mendenhall River’s changed topography. (Maps provided by City and Borough of Juneau)
Video
Workers install HESCO barriers along the Mendenhall River. (City and Borough of Juneau photo)

Lawsuit by property owner seeks to ban CBJ from installing HESCO barriers

Plaintiff argues city didn’t get proper federal authorization; municipal attorney says claims are errant.

Workers install HESCO barriers along the Mendenhall River. (City and Borough of Juneau photo)
HESCO barriers are installed on a property along the Mendenhall River this week. (City and Borough of Juneau photo)

Installation of HESCO flood-protection barriers begins along Mendenhall River

Work on first stage of semipermanent levee scheduled to be completed by July, according to CBJ.

HESCO barriers are installed on a property along the Mendenhall River this week. (City and Borough of Juneau photo)
Water spills into homes and streets in the Mendenhall Valley following record flooding from the Mendenhall River on the morning of Aug. 6, 2024. (Photo by Rich Ross)

Site assessments begin in neighborhoods where flood barriers will be installed

HESCO barriers are on their way to Juneau. Funding to study a long-term solution is not guaranteed.

Water spills into homes and streets in the Mendenhall Valley following record flooding from the Mendenhall River on the morning of Aug. 6, 2024. (Photo by Rich Ross)