The Minnesota Department of Natural Resources announced in a news release today it will close a 1970s-era fish hatchery in Duluth Township.

The French River Cold Water Hatchery, located on Lake Superior two miles north of Duluth, needs $8 million in capital investment to address failing equipment, according to the DNR. It also consumes 10 percent of the energy used by the agency statewide.

A hatchery was first established at the location in 1919, originally known as the Lake Superior State Fish Hatchery. The French River Cold Water Hatchery was built in 1975 to conduct the majority of fish propagation. Since 1962, the DNR and U.S. Fish and Wildlife Service have planted about 300,000 six-inch lake trout along the North Shore each year, resulting in a 250 percent increase in lake trout netted during surveys, according to the DNR.