Class A Wild Trout Waters are the highest biomass class given to streams in Pennsylvania by the Pennsylvania Fish and Boat Commission. They are considered to contain the highest-quality naturally reproducing trout populations in Pennsylvania. The first streams received their Class A Wild Trout Waters designations in 1983. There are now hundreds of such waters, comprising nearly 1,500 miles (2,400 km) of streams. Class A Wild Trout Waters receive certain legal protections. For instance, they are typically classified by the Pennsylvania Department of Environmental Protection as High-Quality Coldwater Fisheries. Most Class A Wild Trout Waters are subject to standard statewide angling regulations by the Pennsylvania Fish and Boat Commission.