 Much of NY 9N runs alongside either a river or a lake . It follows the Hudson River through northern Saratoga County and southern Warren County , the entirety of Lake George 's western shoreline , the west edge of Lake Champlain between Ticonderoga and Westport , and the Ausable River from Keene to Keeseville . The other portions of NY 9N pass through predominantly rural and mountainous regions of the Adirondack Mountains . 
