Morning comes up the Niagara first, and by the time the light crosses Gratwick Riverside Park the grass along the bank is already holding it. The GreenerWe Land care keeps lawns on the streets that lean toward that water — mowing, trimming and edging until a yard reads as cleanly as a page. Summer in North Tonawanda is generous and humid, and it asks for a steady hand more than a heavy one. When the year turns, the same routes get walked in the dark: plowing, shoveling and salting, so a drive is open before anyone has to think about it. It is plain work in a river town that has always known what plain work is worth.