Nature-Based Solutions Case Study

Vegetated Dune and Buried Revetment: Maui, HI

State/Territory: Hawaii

The Wailuku-Kahului Wastewater Reclamation Facility on the island of Maui were in danger of failing within a 1- to 10-year timeframe because of chronic shoreline erosion. The County of Maui opted for a nature-based solution that included a buried revetment, some beach nourishment, dune restoration, and vegetative plantings. The nature-based solution protects the wastewater facilities against shoreline retreat, reduces wave-induced flooding, provides sandy beach habitat, and enhance resilience to erosion and sea level rise impact. Three years of monitoring data illustrated beach nourishment accretions and reduction in the annual erosion rate.

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Habitat Types

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Coastal Habitats

Strategies

Nature-based strategies examined in this case study.

Beach Nourishment

Dune Restoration

Top Outcomes

Climate threat reduction, ecological benefits, or social & economic benefit goals obtained in this case. Click to search for case studies with similar outcomes.

Adapt to Sea Level Rise

Protect Property and Infrastructure

Reduce Coastal Flooding

Reduce Erosion

Sourcing

Case study originally found at: https://www.fhwa.dot.gov/environment/sustainability/resilience/ongoing_and_current_research/green_infrastructure/implementation_guide/fhwahep19042.pdf