Fort Johnson sits on a shelf of ground above the Mohawk, where Route 5 threads the valley and the old stone house keeps watch above the creek. Alteri's Landscaping & Snow Plowing works both halves of that calendar in a corridor built to funnel weather — mowing, trimming, edging, mulch and cleanups while the river runs green, then plowing, walkway clearing and salting when the wind comes down the valley with snow behind it. Yards along here run to slope and odd corners, and getting them right means knowing which way water wants to travel. In July the payoff is a drawn edge along every walk; in January it is a driveway opened all the way to pavement. Between Fort Johnson, Amsterdam and the villages strung along the river, that rhythm does not let up.