Tags: Dam.
Libby Dam is a dam on the Kootenai River in the U.S. state of Montana. Dedicated on August 24 1975 Libby Dam spans the Kootenai River 17 miles (27 km) upstream from the town of Libby Montana. Libby Dam is 422 feet (129 m) tall and 3055 feet (931 m) long. The reservoir behind the dam is Lake Koocanusa; it extends 90 miles (140 km) upriver from the dam and has a maximum depth of about 370 feet (110 m) . Forty-two miles (68 km) of Lake Koocanusa are in British Columbia Canada.