Since 1998 the many acres of ponds in this hatchery by the Garrison Dam have raised and released thousands of native fish back into the Missouri River. The goal was to help maintain the ecosystem since the construction of the Garrison Dam was completed in 1954. Visitors interested in the process of fish conversation can stop inside for a tour. Featured species of fish that are raised in the hatchery include Brown Trout, Chinook Salmon, and Northern Pike. Every September with the help of the Great Planers Trout and Salmon Club the Garrison Dam National Hatchery hosts the annual Kids Fishing Day which is a great family event, especially for those with a budding interest in fishing. Visitors can also hike outside the hatchery through the River Loop Trail or the Hatchery Loop through the wetlands. From Memorial Day to Labor Day people can see the fish through one of the five 300-gallon aquariums.