The Thunder River Rearing Station, also known as “Little Falls Hatchery”, is celebrating more than 75 years as a fish rearing operation. The Wisconsin Department of Natural Resources operates this facility today for the purpose of producing large size brown trout for the Lake Michigan fisheries program.Fishing is allowed downstream from the main entrance. The rustic building design and potential for raising millions of fish for the Wisconsin sportsman made it a premier facility of that time. Over the years, Thunder River Hatchery has steadfastly maintained its authentic beauty while providing fish for the public under modern standards of fish propagation.