There are 15 state fish hatcheries in Pennsylvania. Owned by the state and operated by the Fish and Boat Commission, these hatcheries are strategically located across the Commonwealth to take advantage of high-quality water supplies and to maximize fish stocking logistics. Pennsylvania's state fish hatcheries are engines for economic development. Eight hatcheries combine to produce some 4 million adult trout annually. Stocked into the waters of the Commonwealth, these trout support fishing activity that generates some $500 million in economic activity each year.