Live updates as record-breaking glacial outburst flooding impacts Juneau's Mendenhall Valley (2024)

Update, 6 p.m. Tuesday

The flood warning expired at 4 p.m. More information and resources for affected residents can be found on KTOO’s flood resources page.

Update, 12:40 p.m. Tuesday

Gov. Mike Dunleavy has declared a state disaster emergency in response to the flooding.

“The disaster declaration has activated the state’s disaster Public Assistance and Individual Assistance disaster recovery programs,” reads the press release from the Governor’s Office. “The Public Assistance program reimburses communities and jurisdictions for emergency response costs, emergency protective measures, and can fund repair of critical infrastructure damaged by the declared disaster event. The Individual Assistance program provides grants to individuals and families with damage to their primary homes or transportation, disaster related medical expenses, or other eligible disaster related expenses. Temporary Housing is also available.”

Update, 10 a.m. Tuesday

The Juneau Assembly has announced a special Assembly meeting to take place at noon today, via Zoom. They’ll discuss Resolution 3071: A Resolution of the City and Borough of Juneau Declaring a Local Emergency in Response to the August 2024 Glacier Outburst Flood and a Request for State and Federal Assistance.

Update, 9 a.m. Tuesday

According to Deputy City Manager Robert Barr, no people have been reported injured or missing, though crews did respond to several emergency calls during the course of the night.

Sen. Lisa Murkowski sent this tweet earlier this morning:

This morning, I’ve been on the phone with the Juneau mayor, city manager, and US Coast Guard about the unprecedented glacial outburst flooding from the Mendenhall River. While water levels have crested and started to fall, and there have been no reports of injuries or missing… pic.twitter.com/iajISiCOEZ

— Sen. Lisa Murkowski (@lisamurkowski) August 6, 2024

Update, 6:15 a.m. Tuesday

According to Deputy City Manager Robert Barr, more than 20 people arrived at the city’s emergency shelter at Floyd Dryden Middle School by 3 a.m. this morning. And more than 30 people are there as of 6 a.m.

“We have people showing up pretty wet, in their pajamas,” Barr said. “We definitely saw flooding this year in areas we didn’t see last year.”

That shelter will remain open through the afternoon Tuesday.

Update, 4:50 a.m. Tuesday

The Mendenhall River crested at 15.99 feet just past 3 a.m. and has started to fall, according to a National Weather Service update posted at 4 a.m.

Update, 1:30 a.m. Tuesday

Water levels have officially surpassed last year’s record breaking flood level. According to the National Weather Service, flooding reached 15.47 feet around 1 a.m.

“The rate of river rise has started to slow and we are still anticipating a crest height around 15.7 ft over the next 2-3 hours,” NWS wrote in a Facebook post shortly after 1 a.m.

Expected flood impacts above 15 feet include “up to 2 feet of water covering Killewich Drive and water entering the backyards of houses along the south side of Marion Drive. Rivercourt Way, Lakeview Court, Center Court, Parkview Court, Turn Street and Northland Street could have up to 1.5 feet of water over the road. Up to 1 foot of water covering Riverside Drive at Tournure Street.” Homes were expected to begin experiencing flooding at 14.5 feet on Meander Way and View Drive.

AEL&P has cut off power to multiple streets experiencing flooding along the river.

Update, 7:40 p.m. Monday

The following text alert was sent to Juneau residents in the Mendenhall Valley shortly before 7 p.m. Monday:

AEL&P also announced power is being cut to View Drive due to rising floodwater.

Update, 5 p.m. Monday

The City and Borough of Juneau is strongly advising residents along the river to evacuate their homes if they live in one of the areas most likely to experience flooding.

The water level is now expected to crest as high as 15.7 feet around 1 a.m. Tuesday, according to the National Weather Service.

Original story

Glacial outburst flooding in the Mendenhall Lake and River is underway, and flood waters are expected to crest at near-record levels around 4 a.m. Tuesday.

The City and Borough of Juneau will work with Capital City Fire/Rescue and the Juneau Police Department to issue voluntary evacuation orders for neighborhoods that might take on water as flood waters continue to rise.

Deputy City Manager Robert Barr said the city is preparing a temporary shelter at Floyd Dryden Middle School, which will open up at 8 p.m. Monday evening.

“It’s probably just going to be for a single night, because we expect based on forecasting that very quickly after the peak the river will start to fall,” he said. “We should see water off of the streets by 7 a.m. tomorrow.”

Last year, emergency evacuations only applied to Marion Drive, though many other neighborhoods were affected by flooding. Officials say residents west of Riverside Drive should move important belongings to higher ground and be prepared to spend the night somewhere else.

“It’s hard to make those calls, and make those decisions about where to recommend evacuations,” Barr said. “We really do also rely on the people in those neighborhoods to be paying attention and making their own decisions.”

The Mendenhall Campground was evacuated Sunday evening. Low-lying areas there have taken on water from Mendenhall Lake.

Alaska Electric Light and Power cut off power to the campground as a precaution, and they’re anticipating more outages as flooding continues. Homes on View Drive will likely lose power sometime before 4 p.m. Monday. Any neighborhoods that lost power during last year’s flood should be prepared to lose it again.

Juneau Animal Rescue is offering emergency boarding for pets in need, as space allows. Those looking to drop off their pets can contact Animal Control and Protection at 907-789-6997 to learn more.

The Alaska Department of Environmental Conservation is asking residents to secure their heating oil tanks as part of their flood preparation. Oil drums and propane tanks were swept away during last year’s flood, which posed a pollution threat.

Homeowners should close fuel tank connections, elevate piping and anchor tanks to prevent them being carried away.

People are encouraged to limit vehicle traffic around the Mendenhall River to allow smooth evacuations and emergency response.

Some roads and trails have already been closed, including the Diamond Park Pedestrian Bridge, Kaxdigoowu Héen Dei (Brotherhood Bridge Trail), the Airport Emergency Vehicle Access Road and Airport Dike Trail and Skater’s Cabin Road.

This is a developing story. Check back for updates.