Many anglers assume all trout in southeast Minnesota are stocked. This is not the case as many trout populations are sustained by natural reproduction.
The DNR will stock Rainbow, Brown or Brook Trout in certain stream sections for three reasons:
Although a few Rainbow Trout fingerlings are stocked, most Rainbow Trout are stocked as yearlings (9-12 inches). Brown Trout are stocked as fingerlings (2-3 inches) in late May and June. The Crystal Springs State Fish Hatchery (Altura), Peterson State Fish Hatchery (Peterson) and Lanesboro State Fish Hatchery (Lanesboro) supply most of the trout stocked in Minnesota.