This Envisat image features Alaska’s Yukon Delta, where the Yukon River, North America’s fifth-longest river system, fans out into a labyrinth of distributaries before emptying into the Bering Sea. Originating on the northern border of British Columbia in Canada, the Yukon flows some 3190 km across central Alaska in the US before emptying into Norton Sound (top left). With its many tributaries, the Yukon drains a basin of 855 000 sq km. Together with the Kuskokwim Delta, it forms the Yukon–Kuskokwim Delta, one of the largest delta systems in the world. Read More
