The Saco River Estuary has become a laboratory where scientists, students, and community members are working together to learn how to sustain a very special place. This Maine EPSCoR SSI research project at the University of New England benefits from the ideal location of the school situated right at the mouth of the Saco River. While the river is much cleaner than it was 50 years ago, it courses through the shadow of massive mills that not only fueled the economy but also left a legacy tainted by pollution. To help planners and managers understand that impact, SSI researchers at UNE are combining their research with stakeholder concerns and developing a grading system to help assess the health of the estuary.