Rising sea levels, intensifying storms, and increasing flood risks are creating unprecedented challenges for coastal communities across the northeastern United States. In this region in particular, the magnitude of projected sea level rise is among the largest of any in the world threatening millions of Americans and billions of dollars in infrastructure. Small municipalities and neighborhoods often lack the expertise and tools needed to translate cutting-edge Earth system science into practical protection strategies for their residents. This project will build a collaborative network of scientists, engineers, policy experts, and community leaders to accelerate the development and implementation of adaptation solutions at the scale where they matter most, individual properties and neighborhoods. The project aims to reduce flood risks that currently cause over $32 billion in annual damages, protect vulnerable populations from extreme heat related illness, and preserve coastal infrastructure that supports regional economies. The collaborative approach of the project is driven by community needs in the Northeast region and will provide a replicable model for environmental adaptation nationwide. This project establishes a regionally coordinated adaptation network spanning Connecticut, Maine, New York, and surrounding northeastern states. The project employs a systematic 10-step coordination plan to engage collaborators from academia, private sector, and government agencies a