|Location||Lake and Peninsula Borough, Alaska|
|Basin countries||United States|
|Max. length||37 mi (60 km)|
|Surface area||453 sq mi (1,170 km2)|
|Surface elevation||13 ft (4.0 m)|
Becharof Lake is a 37-mile (60 km) long lake on the Alaska Peninsula. It is located 23 miles (37 km) south-east of Egegik, in the Aleutian Range. It is the second largest lake in Alaska after Iliamna Lake. It ranks eighth on list of largest lakes of the United States by volume and fourteenth on list of largest lakes of the United States by area.
Russian navigator Dmitry Bocharov of the Imperial Russian Navy explored at Kodiak, Alaska, in 1788, and returned to Alaska in 1791. In late spring 1791, Alexander Andreyevich Baranov, chief manager of the Shelikhov-Golikov Company in Russian America, ordered Bocharov to explore the northwest shore of the Alaska Peninsula. His orders directed him to seek a portage across the peninsula near Kodiak. Twenty to thirty men crewed two 30-foot (9.1 m) walrus-skin-covered open boats under his command. They sailed and paddled from Unalaska Island along the northwest shore of the Alaska Peninsula as far as Bristol Bay via Egegik Bay. In search of a portage, he traveled up the Egegik River into a large inland lake. This lake now bears his name with an Americanized spelling: Becharof Lake. He probed the lake to its most eastern extent in the summer of 1791. After making a portage from the easternmost point of the lake to the North Pacific Ocean, he returned to Kodiak and reported his findings to Baranov.
The Russian Hydrological Department published the name "Oz(ero) Ugashek" on Chart 1455 in 1852.
The Alaska Purchase of 1867 transferred the territory from the Russian Empire to the United States of America. Naturalist William Healey Dall of the Smithsonian Institution, later Acting Assistant to the United States Coast Survey, named the lake in 1868.
- U.S. Geological Survey Geographic Names Information System: Becharof Lake
- "Profile of the People and Land of the United States". US Department of Interior, National Atlas of the United States. Archived from the original on 2012-09-15.
- Black, Lydia T. (2004). Russians in Alaska: 1732–1867. University of Alaska Press. p. 113. ISBN 1889963054.
- Chevigny, Hector (1942). Lord of Alaska – The Story of Baranov and the Russian Adventure. Portland OR: Binfords & Mort. p. 46. ASIN B00EYBFJG6.
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