Skokie sits on ground the glaciers left almost perfectly flat, which sounds easy right up until you are the one deciding where the water goes. Contour Landscaping Inc reads a yard for its slight falls and rises: mowing to an even height, edging the walk so the line holds, trimming the fence run, keeping the parkway strip as tidy as the front lawn. Cleanups bracket the season at both ends. In winter the work turns to plowing drives, shoveling walks and salting the low places where meltwater finds somewhere to freeze. Small differences in level decide a great deal around here, in July and in January alike.