Three rivers meet near Pequannock Township — the Pequannock, the Pompton, the Ramapo — and in spring they run high and brown and remind everybody where the water goes. GREENNATURE LANDSCAPE DESIGN LLC works the ground between them: mowing and trimming and edging through the growing months, cleanups when the leaves come down, and plowing and shoveling once January locks the valley up. Cold settles into low river land and stays, so a storm here leaves more behind than the forecast promised. Opening a driveway and a walk before the household stirs is a plain kind of good. So is a lawn cut level in June, with the edge run true along the concrete.