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Katmai

Photo of this volcano
  • United States
  • Alaska
  • Stratovolcano
  • 1912 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 58.28°N
  • 154.963°W

  • 2047 m
    6716 ft

  • 312170
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Katmai.

The Global Volcanism Program has no Weekly Reports available for Katmai.

The Global Volcanism Program has no Bulletin Reports available for Katmai.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 6 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1931 May 8 ] [ 1931 Jul ] Discredited    
[ 1929 Dec ] [ Unknown ] Discredited    
[ 1921 Nov 27 ] [ Unknown ] Discredited    
[ 1920 Mar 9 ] [ Unknown ] Discredited    
[ 1914 Jul ] [ Unknown ] Discredited    
1912 Jun 6 1912 Jul 21 (in or after) Confirmed 3 Historical Observations
Deformation History

There is no Deformation History data available for Katmai.

Emission History

There is no Emissions History data available for Katmai.

Photo Gallery

Katmai caldera, a collapse feature formed during the catastrophic eruption of the nearby Novarupta vent in June 1912 is seen here in an aerial view from the NE. The steep-walled, 1.5-km-wide Katmai caldera truncates a formerly 2290-m-high cluster of overlapping stratovolcanoes. The caldera is partially filled by a blue-green lake that is about 250 m deep and rising. Beyond the caldera are the multiple peaks of Trident volcano; Mageik volcano is the snow-and-ice-covered cone on the skyline.

Photo by Chris Nye, 1991 (Alaska Division of Geological and Geophysical Surveys, Alaska Volcano Observatory).
See title for photo information.
Katmai caldera, seen here from its west rim, is a 3 x 4.5 km wide caldera that formed in 1912. Little if any eruptive activity took place at Katmai itself, which prior to collapse was a complex of 4 small overlapping stratovolcanoes. Hydraulic draining of magma away from Katmai to Novarupta volcano (10 km to the west) during the catastrophic 1912 eruption caused the collapse of the unsupported summit(s) of Katmai. The 250-m-deep caldera lake covers a small lava dome and tuff ring that were erupted on the floor of the caldera.

Photo by Game McGimsey, 1990 (Alaska Volcano Observatory, U.S. Geological Survey).
See title for photo information.
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.

Title: Canada, United States
Publisher: DMA Aerospace Center
Country: United States, Canada
Year: 1989
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Canada, United States
Title: Quat Geol, Ugashik, Bristol Bay, & W Karluk Quads
Publisher: US Geological Survey
Country: United States
Year: 1987
Series: MI
Map Type: Geology
Scale: 1:250,000
Map of Quat Geol, Ugashik, Bristol Bay, & W Karluk Quads
Title: Kodiak
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1987
Series: Sectional Aero Chart
Map Type: Topographic
Scale: 1:500,000
Map of Kodiak
Title: Mt Katmai & Portions of Afognak, Naknek Quads, Geo
Publisher: US Geological Survey
Country: United States
Year: 1987
Series: OFR
Map Type: Geology
Scale: 1:250,000
Map of Mt Katmai & Portions of Afognak, Naknek Quads, Geo
Title: Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Publisher: US Geological Survey
Country: United States
Year: 1986
Series: Misc Investigations
Map Type: Geology
Scale: 1:1,000,000
Map of Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Title: Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Publisher: US Geological Survey
Country: United States
Year: 1986
Series: Misc Investigations
Map Type: Geology
Scale: 1:1,000,000
Map of Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Title: Mt Katmai (A-4)
Publisher: US Geological Survey
Country: United States
Year: 1984
Series: 63,360 Topo
Map Type: Topographic
Scale: 1:63,360
Map of Mt Katmai (A-4)
Title: N Aleutian Basin, Gulf of AK
Publisher: USDI Minerals Management Service
Country: United States
Year: 1984
Series: OCSRM maps
Map Type: Bathymetric
Scale: 1:1,000,000
Map of N Aleutian Basin, Gulf of AK
Title: Mt Katmai, Shelikof Strait
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1983
Map Type: Bathymetric
Scale: 1:250,000
Map of Mt Katmai, Shelikof Strait
Title: Karluk, Shelikof Strait
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1983
Map Type: Bathymetric
Scale: 1:250,000
Map of Karluk, Shelikof Strait
Title: (1) XSect AK Peninsula-Kodiak-Aleutian Trench
Publisher: GSA
Country: United States
Year: 1979
Series: MC
Map Type: Geology (Cross-Section)
Scale: 1:1,000,000
Map of (1) XSect AK Peninsula-Kodiak-Aleutian Trench
Title: (2) XSect AK Peninsula-Kodiak-Aleutian Trench
Publisher: GSA
Country: United States
Year: 1979
Series: MC
Map Type: Geology (Cross-Section)
Scale: 1:1,000,000
Map of (2) XSect AK Peninsula-Kodiak-Aleutian Trench
Title: Mt Katmai (A-3)
Publisher: US Geological Survey
Country: United States
Year: 1977
Series: 63,360 Topo
Map Type: Topographic
Scale: 1:63,360
Map of Mt Katmai (A-3)
Title: Mt Katmai Area, Geol Map & Structure Sections in
Publisher: US Geological Survey
Country: United States
Year: 1959
Series: B
Map Type: Geology
Scale: 1:250,000
Map of Mt Katmai Area, Geol Map & Structure Sections in
Title: Mt Katmai
Publisher: US Geological Survey
Country: United States
Year: 1951
Series: AK Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of Mt Katmai
Smithsonian Sample Collections Database

The following 76 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.

Catalog Number Sample Description Lava Source Collection Date
NMNH 116509-1 Glass -- 18 Aug 1923
NMNH 116509-10 Andesite -- 3 Sep 1923
NMNH 116509-11 Glass -- 10 Oct 1923
NMNH 116509-12 Basalt -- --
NMNH 116509-13 Glass -- 1 Jul 1923
NMNH 116509-14 Basalt -- 27 Jul 1923
NMNH 116509-15 Dike Rock -- 8 Jun 1923
NMNH 116509-16 Obsidian -- 10 Jul 1923
NMNH 116509-17 Rhyolite -- 5 Jul 1923
NMNH 116509-18 Tuff -- --
NMNH 116509-19 Basalt -- 10 Oct 1923
NMNH 116509-2 Syenite -- 6 Jul 1923
NMNH 116509-20 Obsidian -- 10 Jul 1923
NMNH 116509-21 Granite -- 6 Sep 1923
NMNH 116509-22 Lava -- 14 Jul 1923
NMNH 116509-23 Quartz Porphyry -- 4 Aug 1923
NMNH 116509-24 Glass -- 2 Aug 1923
NMNH 116509-25 Dacite -- 10 Oct 1923
NMNH 116509-26 Rhyolite -- 1 Jul 1923
NMNH 116509-3 Pumice -- 19 Jul 1923
NMNH 116509-4 Glass -- 11 Jul 1923
NMNH 116509-5 Quartz Porphyry -- 20 Aug 1923
NMNH 116509-6 Andesite -- 10 Aug 1923
NMNH 116509-7 Trachyte -- 26 Jul 1923
NMNH 116509-8 Tuff -- 2 Aug 1923
NMNH 116509-9 Pumice -- 13 Aug 1923
NMNH 116550-1 Pumice -- 25 Aug 1923
NMNH 116550-10 Granite -- --
NMNH 116550-2 Pumice -- 25 Aug 1923
NMNH 116550-3 Pumice -- 25 Aug 1923
NMNH 116550-4 Tuffaceous Sand -- 8 Jul 1923
NMNH 116550-5 Tuffaceous Sand -- 30 Apr 1935
NMNH 116550-6 Pumice -- --
NMNH 116550-7 Pumice -- --
NMNH 116550-8 Pumice -- --
NMNH 116550-9 Pumice -- --
NMNH 116660-4 Dacitic Pumice -- --
NMNH 117259-1 Fumarole Deposit -- 30 Jun 1919
NMNH 117259-10 Fumarole Deposit -- 4 Jul 1919
NMNH 117259-11 Fumarole Deposit -- 4 Jul 1919
NMNH 117259-12 Fumarole Deposit -- 6 Jul 1919
NMNH 117259-13 Fumarole Deposit -- 4 Jul 1919
NMNH 117259-14 Fumarole Deposit -- 5 Jul 1919
NMNH 117259-15 Fumarole Deposit -- 5 Jul 1919
NMNH 117259-16 Fumarole Deposit -- --
NMNH 117259-17 Fumarole Deposit -- 14 Aug 1919
NMNH 117259-18 Fumarole Deposit -- 14 Aug 1919
NMNH 117259-19 Fumarole Deposit -- 11 Aug 1919
NMNH 117259-2 Fumarole Deposit -- 15 Aug 1919
NMNH 117259-25 Fumarole Deposit -- --
NMNH 117259-26 Fumarole Deposit -- 9 Aug 1919
NMNH 117259-27 Fumarole Deposit -- 9 Aug 1919
NMNH 117259-28 Fumarole Deposit -- 9 Aug 1919
NMNH 117259-29 Fumarole Deposit -- 9 Aug 1919
NMNH 117259-3 Fumarole Deposit -- 12 Aug 1919
NMNH 117259-30 Fumarole Deposit -- 10 Aug 1919
NMNH 117259-31 Fumarole Deposit -- 8 Aug 1919
NMNH 117259-32 Fumarole Deposit -- 11 Aug 1919
NMNH 117259-33 Fumarole Deposit -- 11 Aug 1919
NMNH 117259-34 Fumarole Deposit -- 12 Aug 1919
NMNH 117259-35 Fumarole Deposit -- 12 Aug 1919
NMNH 117259-36 Fumarole Deposit -- 13 Aug 1919
NMNH 117259-37 Fumarole Deposit -- 15 Aug 1919
NMNH 117259-38 Fumarole Deposit -- 14 Aug 1919
NMNH 117259-39 Fumarole Deposit -- 14 Aug 1919
NMNH 117259-4 Fumarole Deposit -- 12 Aug 1919
NMNH 117259-40 Fumarole Deposit -- --
NMNH 117259-41 Fumarole Deposit -- 14 Aug 1919
NMNH 117259-42 Fumarole Deposit -- 14 Aug 1919
NMNH 117259-43 Fumarole Deposit -- 8 Jul 1919
NMNH 117259-44 Fumarole Deposit -- --
NMNH 117259-5 Fumarole Deposit -- 12 Aug 1919
NMNH 117259-6 Fumarole Deposit -- 26 Jul 1919
NMNH 117259-7 Fumarole Deposit -- 2 Jul 1919
NMNH 117259-8 Fumarole Deposit -- 4 Jul 1919
NMNH 117259-9 Fumarole Deposit -- 4 Jul 1919
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