Mackay State Fish Hatchery celebrates 100 years of stocking Idaho waters

Today, Mackay's water still comes from the same Warm Springs source, gravity-fed from four main springs with a steady temperature ideal for trout production. The hatchery operates year-round, producing 3-4 million fingerlings for statewide stocking and about 90,000 catchable-sized rainbow and cutthroat trout for lakes, reservoirs, and streams within a 100-mile radius. Current species raised include rainbow trout, brook trout, tiger trout, fine-spotted cutthroat trout, Henrys Lake Yellowstone cutthroat trout, westslope cutthroat trout, golden trout, Arctic grayling, and kokanee salmon.