Icalma Lake

Icalma Lake is a lake of glacial origin located in the Andes of the La Araucanía Region of Chile. A hamlet on the southern shore of the lake is also called Icalma. About 3 kilometres (1.9 mi) from the hamlet is Icalma Pass, 1,307 metres (4,288 ft) in elevation and on the border with Argentina. The pass is traversed by a road, unpaved in Chile in 2017 and sometimes impassable during the Southern Hemisphere winter due to heavy snows.[2] Icalma Airport is located 9 kilometres (5.6 mi) northeast of the hamlet.

Icalma Lake
Icalma Lake
Coordinates	38°48′S 71°17′W
Primary inflows	Huillinco and Icalma rivers
Primary outflows	Rukanuco River
Catchment area	150 km2 (58 sq mi)[1]
Basin countries	Chile
Max. length	9 kilometres (5.6 mi)
Max. width	2.5 kilometres (1.6 mi)
Surface area	9.8 square kilometres (2,400 acres)
Average depth	66 m (217 ft)[1]
Max. depth	135 m (443 ft)[1]
Water volume	.6 cubic kilometres (490,000 acre⋅ft)
Surface elevation	1,150 m (3,770 ft)[1]
References	[1]

Icalma Lake is connected to the Laguna Chica de Icalma (Little Lake of Icalma) by a short stream about 300 metres (980 ft) long. The two lakes together have a surface area of 11.7 square kilometres (2,900 acres).[1] Icalma Lake drains northeastwards by way of a 10 kilometres (6.2 mi) long river named Rukanuco. Icalma Lake and nearby Galletué Lake are the sources of the Bio Bio River.[1]

The outlet from Lake Icalma, one of the two sources of the Bio Bio River.