Today, some of the spring water is bottled annually for human consumption and some of the discharge is used for a trout hatchery (behind where I'm standing). The hatchery is a Montana state trout hatchery named Giant Springs Trout Hatchery and raises mostly Rainbow Trout. The spring serves as the headwaters of the 200-foot (61 m)-long Roe River, once listed as the shortest river in the world according to Guinness Book of World Records.