Heads in Canada and flows south 240 miles to Gulf of Alaska at Dry Bay, 49 miles southeast of Yakutat; St. Elias Mountains.
native name reported by Captain Tebenkov (1852, map 7), Imperial Russian Navy (IRN), as "R(eka) Alsekh," or "Alsekh River.: Behring" by La Perouse in 1786, "Jones River" by the New York Times Expedition in 1886, and "Harrison River" by U.S. Coast and Geodetic Survey (USC&GS) in 1890. The name "Alsek River" was originally adopted by the United States and Canada in 1891.
Canyon Glacier, Fassett Glacier, Martin Glacier, Rodman Glacier,
Islands:Lakes:Akwe Lake, Square Lake, Tanis Lake, Ustay Lake,
Mountain Passes:Rapids:Rivers:Alsek River, East Alsek River, Taaltsug River, Tanis River, Tlegan River, Ustay River, Vankahini River,
Streams:Cannery Creek, Clear Creek, Emile Creek, Gines Creek, Muddy Creek, Shack Creek, Split Creek, Williams Creek,