Armstrong Mountain (Keene Valley, New York) Armstrong Mountain (Keene Valley, New York) Armstrong Mountain is a mountain located in Essex County, New York, named after Thomas Armstrong, a local pioneer. The mountain is part of the Great Range of the Adirondack Mountains. Armstrong Mtn. is flanked to the southwest by Gothics, and to the northeast by Upper Wolfjaw Mountain. Armstrong Mountain stands within the watershed of the East Branch of the Ausable River, which drains into Lake Champlain, thence into Canada's Richelieu River, the Saint Lawrence River, and into the Gulf of Saint Lawrence. The east side of Armstrong Mtn. drains into the East Branch of
Rock River (Lake Champlain) Rock River (Lake Champlain) The Rock River is a short tributary of Lake Champlain in northern Vermont in the United States and southern Quebec in Canada. Via Lake Champlain and the Richelieu River, it is part of the watershed of the St. Lawrence River. According to the Geographic Names Information System, it is also known as "River Rocher" and "Riviere de La Roche." The Rock River flows for most of its length in Franklin County, Vermont, rising in the town of Franklin and flowing eastwardly into the town of Highgate, where it turns northwardly and briefly flows for a short