The Alewife District is a unique and complex place. At the heart of the District is the Reservation, a park which stretches across the boundaries of five cities and towns (Belmont, Cambridge, Arlington, Somerville, and Medford). It is a rich socio-ecological system providing habitat for wildlife and places for diverse communities of people. Within the Reservation lies the Alewife Brook, a tributary to the Mystic River and part of the larger Mystic River Watershed.  This Alewife District Community Action Plan builds off decades of advocacy and attempts to create a strategic path forward, outlining what steps Green Cambridge and others can take to restore the ecological health of these 136 acres, make it more climate resilient, and ensure that it is an accessible resource. We hope that this document serves as a launching point for collaborative advocacy, and look forward to the continual improvements and enrichment of the Alewife District.