in Springfield.

At the head of the Mill River there are steep stone retaining walls that were built to prevent the river's banks from degrading any further. The Mill River was once valued for its benefits to developing industry, but modern day incompatible land use is a hindrance to the river becoming a recreational area again. A 2009 master's thesis described a plan that could revitalize the Mill River and its surrounding neighborhoods by remaking the river as a recreational attraction, connecting the Connecticut River and the Basketball Hall of Fame