Lac Témiscamingue (Lake Timiskaming) is a remarkable large freshwater lake straddling the provincial boundary between Ontario and Quebec, Canada. Stretching 110 km (68 miles) in length and covering an area of 304 km², this deep rift lake sits within the Témiscamingue Regional County Municipality on the Quebec side and Timiskaming District on the Ontario side. The lake's very name derives from the Algonquin word Temikami or Temikaming, meaning "deep body of water with rapid winds" — a fitting description that every angler should take seriously. Shaped during the last ice age when glaciers carved deep into the bedrock, Lac Témiscamingue is a remnant of the ancient glacial Lake Ojibway, which existed approximately 9,500 years ago. With its extraordinary depth, diverse fish community of 30 species, and dramatic geography, it offers some of the most varied and productive fishing in the Quebec-Ontario border region.