Ainsworth Hot Springs, previously named Ainsworth, is a historic village on Kootenay Lake in British Columbia, Canada and has a population of 20. Founded on May 31, 1883, it is the oldest surviving community on Kootenay Lake. Ainsworth Hot Springs is located on Highway 31, 11 miles north of Balfour and 12 miles south of Kaslo, British Columbia. Today…Ainsworth Hot Springs, previously named Ainsworth, is a historic village on Kootenay Lake in British Columbia, Canada and has a population of 20. Founded on May 31, 1883, it is the oldest surviving community on Kootenay Lake. Ainsworth Hot Springs is located on Highway 31, 11 miles north of Balfour and 12 miles south of Kaslo, British Columbia. Today, Ainsworth Hot Springs and the Cody Caves are a popular destination for tourists and spelunkers.