Blue Lake Crater

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 44.411°N
  • 121.774°W

  • 1230 m
    4034 ft

  • 322030
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Blue Lake Crater.

The Global Volcanism Program has no Weekly Reports available for Blue Lake Crater.

The Global Volcanism Program has no Bulletin Reports available for Blue Lake Crater.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0680 ± 200 years Unknown Confirmed   Radiocarbon (corrected)

The Global Volcanism Program has no synonyms or subfeatures listed for Blue Lake Crater.

Photo Gallery


Blue Lake Crater, 0.3 x 0.8 km wide, was formed about 1300 years ago by volcanic explosions through pre-existing volcanic bedrock. A least three overlapping craters were formed, with ejecta forming a crater rim only 50 meters above the pre-eruption surface.

Photo by Lee Siebert, 1995 (Smithsonian Institution).
See title for photo information.
Blue Lake Crater in the foreground is one of three overlapping explosion craters located east of Santiam Pass. The craters formed about 1300 years ago by explosions through older volcanic bedrock, and a chain of spatter cones about 6 km SSW of Blue Lake may have been active during the same eruption. Despite its proximity to a major cross-Cascades highway, Blue Lake Crater is one of the least-known Holocene volcanoes of the Cascades. The snow-capped pinnacle of Pleistocene Mount Washington is visible in the background.

Photo by Lee Siebert, 1999 (Smithsonian Institution).
See title for photo information.

Smithsonian Sample Collections Database


There are no samples for Blue Lake Crater in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites