CBJ GUIDE TO FLOOD PREPAREDNESS

Current Conditions:

SUICIDE BASIN OUTBURST UNDERWAY – MONITOR CONDITIONS

Suicide Basin is releasing. No impacts to residential areas expected. Minor flooding expected near Mendenhall Campground and surrounding recreation area. Crest expected between 9.8 feet and 10.3 feet in the afternoon of Friday, October 2.  No evacuation is advised. CBJ is closely monitoring conditions and deploying  flood response personnel and equipment to areas of known barrier seepage out of an abundance of caution.

Monitor updates at www.weather.gov/ajk/suicidebasin.

Key Action Links

Sign up for Emergency Alerts
Current Suicide Basin Conditions (NWS)
CBJ Evacuation Advisory Map

Latest Updates and Alerts

CBJ EVACUATION ADVISORY MAP

CBJ Evacuation Advisory Map

How to Prepare for a Flood

Ready Set Go Graphic

Ready, Set, Go Guide

The ready, set, go structure is a guideline that many states are adopting and that CBJ is excited to continue using. This guide helps streamline information for residents to know their current risk as an event is occurring or as the risk reduces after an incident.

Community Resources

Emergency Shelter

Floyd Dryden Gymnasium (3800 Mendenhall Loop Rd) has been identified as the emergency evacuation shelter location in the event of a flood warning and evacuation notice.

The American Red Cross will operate the shelter. Check out these tips for how to prepare for an emergency in the video below

Capital Transit will assist with the transportation of evacuees from Riverview Senior Living and Trillium Landing to Red Cross Shelters as well as overflow shuttling from Floyd Dryden to contingency shelter locations if the primary shelter capacity is exceeded.

Evacuation Routes

To avoid congestion and road or bridge closures, please follow the evacuation routes below. 

  • Residents north of Division Street, please travel north on Riverside Drive, toward Mendenhall (Back) Loop Road and out of the inundation area.
  • Residents south of Division Street, travel south on Riverside Drive, turn left on Stephen Richards Memorial Drive, towards Mendenhall Loop Road.
  • On Rivercourt Way, travel south on Riverside Drive, toward Egan Drive
  • On the west side of the Mendenhall River, travel west on Mendenhall (Back) Loop Road toward Auke Bay (avoid Back Loop Bridge).
  • West of Brotherhood Bridge, travel west on Glacier Highway toward Auke Bay

Route Maps

Bus Route Detours

Capital Transit Detour Routing will shift to detoured routes at 5p.m. on Wednesday, August 12 until post-GLOF, as long as the detour routes marked are safe to travel. Detours may be modified as needed to ensure safety of the public as well as bus operators as flood conditions change.
Route updates will be available on the Capital Transit app and juneaucapitaltransit.org.
Capital Transit Detour Map

Pump Staging Map

Click the button below to view all pump and sump locations for the 2026 GLOF, updated on 7/7/2026.

2026 Pump Map

Vehicle Parking

Residents in the flood inundation area that (are not sheltering at Floyd Dryden) are invited to move vehicles (cars, ATVs, etc.) to the following parking lots once the Basin is full and evacuation preparedness alert is sent out:

  • St. Brendan’s Episcopal Church
    • 4207 Mendenhall Loop Road
  • Shepherd of the Valley Lutheran Church
    • 8198 Keegan Street
  • Christ Lutheran Church
    • 10300 Glacier Hwy
  • Juneau Christian Center
    • 8001 Glacier Hwy

Please register your vehicles early using the form below.

REGISTER YOUR VEHICLE

Evacuating with Pets

The Red Cross will have limited space to shelter pets at the Floyd Dryden emergency shelter. Please read the full requirements and recommendations here. Juneau Animal Rescue (JAR) offers emergency sheltering for pets through their Safe-Keeping Program (PDF).

JAR and KTOO have created resources to help pet owners prepare for emergencies and evacuation. Click the button below to watch the video or download JAR’s Emergency Pet Planning brochure.

Learn More

State Road Closures and Drone Monitoring

Read more about Alaska Department of Transportation’s role during GLOF events, road closures, and how they support active response at dot.alaska.gov/sereg/juneau-glof/index.shtml.

DOT&PF Flood Response Activities

River Livestream

Follow live camera footage of Mendenhall Lake and Mendenhall River:
KTOO Livestream
KINY River Watch Cam
USGS River Timelapse
Eyes on the River
Explore.org Glacier Cam

Remember: when waters start to rise, stay away from the river and flooded areas for the safety of yourself and others.

Alerts: What to Expect

Residents can expect to receive important notifications about the status of a flood emergency at several points:

National Weather Service determines the Basin is full:

  • CBJ and our partners will issue evacuation advisories via SMS text (push notification, no opt-in requirement). Alerts will also go out via email, social media, website and printed door hangars.
  • Historically, there has been 1-6 days between when the Basin reaches full capacity and its release. However, it is possible for the Basin to release before it reaches full capacity.

Basin begins to release:

  • A FLOOD WARNING will be issued by the National Weather Service.
  • CBJ, Tlingit & Haida and partner agencies will push out evacuation advisories through all available channels.
  • First responders will provide in-person evacuation notice in neighborhoods in the potential flood inundation area.
  • It is possible for the Basin to release before it reaches full capacity. In that case, this would be the first alert distribution.

Water recedes, area deemed safe to return:

  • CBJ and our partners will issue an “All Clear” notification via SMS text, email and social media.
  • Availability of response and recovery services will be share via CBJ & partner agency social media and website(s).
Sign Up for Alerts

Volunteer/Ask For Help

The United Way of Southeast Alaska is coordinating volunteer efforts and offers of help. Please use the sign-up form to request help or participate in volunteer efforts by clicking the button below. You can also call United Way offices directly at (907) 463-5533.

Volunteer/Aid Form

Flood Information Hotline – CLOSED

The CBJ Flood Information Hotline is now closed. Residents can email [email protected] with non-emergency questions and concerns related to the 2026 GLOF.

 

What To Do During a Flood

Before the Flood

  • Monitor alerts and news

  • Charge your phone and pack your go bag

  • Move valuables off the floor & take action to prevent spills

During the Flood

  • Follow evacuation orders

  • Shut off electricity if it’s safe

  • Don’t wait — water rises quickly

  • Do NOT walk or drive through flood waters

After the Flood

  • Return home only when cleared

  • Watch for mold, damage, and contamination

  • Visit bit.ly/JuneauFloodRecovery for clean-up and recovery resources

Flood Mitigation

HESCO Barriers and Short-Term Solutions

CBJ has completed installation of HESCO flood barriers, a short-term measure to reduce the risk of widespread damage from future glacial lake outburst floods (GLOFs).

Learn more about the Phase 1 and Phase 2 barrier projects, along with the stormwater management efforts underway to protect the community from future flood events.

Learn more

Resources and Contact Info

National Weather Service

Road Closure Info – Alaska511

Alaska DEC – Spill Response

Emergency Alerts Signup

Tlingit & Haida Emergency Services

CBJ Emergency Programs

University of Alaska Southeast

American Red Cross – Alaska