The Merrimack is the spine of this city, and from the Notre Dame Bridge you can watch it carry both halves of the year — black and steaming in January, glass-flat and green-banked in July. Reliable Snow Plowing Llc works both ends of that: plowing driveways and lots, clearing walks, spreading salt and sand through winter, then mowing, trimming, edging and seasonal cleanups once the ground finally lets go. Same properties, same attention, different tools in the truck. Manchester weather does not ease into anything, so the changeover happens the week it is needed rather than the week it was penciled in.