#United States #Flood Protection #Juneau #Sealaska

Sealaska Completes Flood Protection Project

Sealaska has made significant strides in enhancing flood protection for communities in the Juneau area, recently completing a crucial flood mitigation project along the Mendenhall River. This initiative comes at a vital time as local residents brace for the looming threat of glacial outburst flooding, particularly from the notorious Suicide Basin, which could trigger floods during the critical months of August and September.

Project Overview

Under the supervision of the U.S. Army Corps of Engineers, Sealaska deployed a dedicated workforce of 60 individuals, both employees and subcontractors, to execute this critical flood defense project. The team successfully installed 14,110 linear feet of HESCO flood barriers and placed approximately 112,872 tons of rock, fortifying the river corridor that stretches approximately four miles. As a result, the local community has gained essential protections against potential catastrophic flooding.

The project was completed ahead of schedule, on July 3, 2026, despite a demanding timeline and the inherent challenges associated with working in a flood-prone area. The timely completion was particularly crucial given that the summer months typically herald an increase in risk due to melting ice and snowmelt that can lead to significant flooding from the Suicide Basin.

Shields Against Disaster

David McQueen, the general manager of Sealaska's construction division, emphasized the extraordinary efforts demonstrated by the teams involved. They faced not only the physical challenges posed by the environment but also operational difficulties that required quick adaptations to logistics and site conditions. To mitigate risks, crews also constructed new access roads and cleared hazardous debris that could obstruct flood protection measures in the future.

From the peak of operations, crews were placing more than 1,630 tons of material each day. One of the standout features of the project included a 12-foot-high flood protection levee spanning 1,100 feet. This dedicated levee, built from locally sourced materials, plays a crucial role in maintaining the integrity of the riverbanks and protecting adjacent properties from erosion and other flood-related damage.

Local Commitment and Opportunities

Sealaska is committed to fostering local employment and Indigenous workforce inclusion. Approximately 25% of the skilled labor for this project consisted of Alaska Native employees. As expressed by Heath Barger, a senior project manager and Alaska Native, these opportunities are vital for local communities, reinforcing the importance of Indigenous engagement in critical infrastructure projects.

Environmental Considerations

Throughout the construction process, strict environmental protection measures were enforced to ensure the safety of the river corridor. This included routine equipment inspections, spill prevention strategies, and the presence of onsite emergency response resources. The HESCO barriers provide an immediate protective layer, while the U.S. Army Corps of Engineers evaluates long-term solutions for future flood risks in the Juneau area.

Key Takeaways

• - 14,110 linear feet of HESCO barriers were installed, along with 112,872 tons of rock for armoring.
• - Approximately four miles of the river corridor were reinforced, enhancing the protection of homes and infrastructure.
• - The project employed 60 workers, achieving completion 12 days ahead of schedule.
• - The initiative significantly reduces the risk of residential flooding, following two years of record flooding in the region.

With this completion, Sealaska not only strengthens the flood defenses for Southeast Alaska but also exemplifies a commitment to community involvement, environmental stewardship, and proactive disaster management strategies in the face of climate challenges.