Lake Merzbacher

Lake Merzbacher (Kyrgyz: Мерцбахер көлү) is a moraine glacier lake located in east Kyrgyzstan between the north and south Engilchek Glaciers in the Tien Shan Mountains.^[1] It is often called the "Disappearing Lake" because it drains every year as the ice melts, often causing a glacial lake outburst flood.^[2] The lake was named after a German explorer, Gottfried Merzbacher, who led an expedition in the area in 1903.^[1][3] An ice dam prevents the lake from draining through the majority of the year. However, when a hole finally melts through the dam, the lake drains within three days.^[3] When this happens, the lake's discharge can be up to 1000 m³ a second which causes destruction of infrastructure and creates major flooding downstream.^[1] It goes through this cycle of appearing, expanding and then draining annually.^[3]

Coordinates42°12′N 79°52′E

Lake typeGlacier lake

Primary inflowsGlaciers

Primary outflowsEngilchek River

Quick facts Coordinates, Primary inflows ...

Lake Merzbacher
Lake Merzbacher after outburst
Lake Merzbacher Show map of Kyrgyzstan Lake Merzbacher Show map of Asia
Coordinates	42°12′N 79°52′E
Lake type	Glacier lake
Primary inflows	Glaciers
Primary outflows	Engilchek River
Basin countries	Kyrgyzstan
Surface elevation	3,304 metres (10,840 ft)

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