Managed by the Missouri Department of Conservation, the hatchery at Roaring River State Park is one of Missouri's oldest hatcheries, producing and stocking over 250,000 trout each year in the 1.6 miles of stream located in the park. Over 100,000 adults and children come to fish and enjoy the beauty of the daily stocked stream each year.The Conservation Department stocks trout every evening from the day before the March 1 opener through Oct. 30. Tag sale estimates determine a daily stocking rate average of 2.25 fish per expected angler. Except on opening day, three fish are stocked for every expected angler. From March 1 to Oct. 31, the parks will collectively sell more than 400,000 tags and stock more than 900,000 fish. These fish will average about 12 inches long over the season, but some variation occurs. Dozens of lunkers weighing upwards of 3 pounds are stocked each year. A few tip the scales at more than 10 pounds!