Black River Professional Review and Guide
"From its origins on the Porrupine River Flats of the Yukon Territory, the Black River flows 255 miles through rolling and lowland forests of spruce, hardwoods, and willow, joining the Porrupine River about 16 miles northwest of Fort Yukon. little topographic relief presents itself, though the river has rut an ancient swath through the Yukon Flats, with munerous bluffs and high banks. The upper river flows at a moderate pace (3 to 4 miles per hour); below Salmon Fork, it slows, widens, and meanders through high bluffs.
Below Chalkyitsik, the river widens and slows even more, and high banks limit the view of the surrounding forest. Overall, the river is confined and somewhat unchanging in terms of topography and vegetation. Remains of old cabins exist along the river, particularly up the shallow slough to the site of Old Salmon Village. Rich in wildlife prized for their fur, the Black River region is known as "the cradle of the lynx.""