Southern Andean Volcano Observatory

The Southern Andean Volcano Observatory (Spanish: Observatorio Volcanológico de los Andes del Sur), also known by its acronyms as OVDAS, is a program of the Chilean National Geology and Mining Service to watch the most dangerous volcanoes of the Southern Volcanic Zone in Zona Sur and Palena. The headquarters are at Cerro Ñielol at Temuco from where there is good sight to Llaima and Villarrica, two of Chile's most active volcanoes. Much of the OVDAS work is made in collaboration with CONAF that administers the national parks and reserves where many volcanoes are located. The regional government of La Araucanía Region is also contributing to the project.

This is a list of the volcanoes with activity reports made by the OVDAS.

Name Last eruption Regions of Chile Coordinates Geophones Webcams
San Pedro 1960 Antofagasta 21°53′S 68°24′W / 21.883°S 68.400°W / -21.883; -68.400 0 0
Planchón-Peteroa 2010 Maule 35°14′24″S 70°34′12″W / 35.24000°S 70.57000°W / -35.24000; -70.57000 0 1
Lonquimay 1990 La Araucanía 38°23′S 71°35′W / 38.383°S 71.583°W / -38.383; -71.583 1a 0
Llaima 2009 La Araucanía 38°41′S 71°44′W / 38.683°S 71.733°W / -38.683; -71.733 2 4
Villarrica 2010 La Araucanía, Los Ríos 39°25′S 71°56′W / 39.42°S 71.93°W / -39.42; -71.93 2 4
Mocho-Choshuenco 1864 Los Ríos 39°55′S 72°02′W / 39.917°S 72.033°W / -39.917; -72.033 1 0
Cordón Caulle 2011 Los Ríos, Los Lagos 40°31′S 72°12′W / 40.517°S 72.200°W / -40.517; -72.200 0 0
Osorno 1869 Los Lagos 41°06′S 72°30′W / 41.100°S 72.500°W / -41.100; -72.500 1 0
Calbuco 1972 Los Lagos 41°19′S 72°36′W / 41.32°S 72.60°W / -41.32; -72.60 1 0
Chaitén 2010 Los Lagos 42°50′S 72°39′W / 42.833°S 72.650°W / -42.833; -72.650 0 2
Melimoyu 200 AD ± 75 years Aysén 44°05′0″S 72°53′0″W / 44.08333°S 72.88333°W / -44.08333; -72.88333 0 0
  • a- not connected to the telephone network

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