Volcano Type: Stratovolcano Composition: Andesite Most Recent Eruption: 6,700 Years Ago Threat Potential: High Glacier Peak
High to Very High Threat Potential Low to Very Low Threat Potential WASHINGTON Mount Jefferson Mount Baker Belknap Glacier Peak Black Butte Crater Lava Field Mount Rainier Blue Lake Crater Mount St. Helens Cinnamon Butte Mount Adams Craters of the Moon Volcanic Field OREGON Davis Lake Volcanic Field Mount Hood Devils Garden Lava Field Three Sisters Diamond Craters Volcanic Field Newberry Volcano Four Craters Lava Field Crater Lake Hell's Half Acre Lava Field CALIFORNIA Indian Heaven Volcanic Field Medicine Lake Volcanno Jordan Craters Volcanic Field Mount Shasta Lava Mountain Lava Field Lassen Peak Sand Mountain Volcanic Field Moderate Threat Potential Wapi Lava Field Mount Bachelor West Crater Volcanic Field Mount Baker
Location: Washington, Whatcom County Latitude: 48.777° N Longitude: 121.813° W Elevation: 3,286 (m) 10,781 (f) Volcano type: Stratovolcano Composition: Andesite Most recent eruption: 6,700 years ago Threat Potential: High Glacier Peak
Location: Washington, Snohomish County Latitude: 48.112° N Longitude: 121.113° W Elevation: 3,213 (m) 10,541 (f) Volcano type: Stratovolcano Composition: Dacite Most recent eruption: 1,100 years ago Threat Potential: High * Mount Rainier
Location: Washington, Pierce County Latitude: 46.853° N Longitude: 121.76° W Elevation: 4,392 (m) 14,410 (f) Volcano type: Stratovolcano Composition: Andesite to Dacite Most recent eruption: ∼1,000 years ago Nearby towns: Orting, Seattle, Tacoma, Yakima Threat Potential: High Mount St. Helens
Location: Washington, Skamania County Latitude: 46.2° N Longitude: 122.18° W Elevation: 2,549 (m) 8,363 (f) Volcano type: Stratovolcano Composition: Basalt to Rhyodacite Most recent eruption: 1980, 2004-2008 Nearby towns: Castle Rock, WA; Olympia, WA; Vancouver, WA; Yakima, WA; Portland, OR Threat Potential: High Mount-Adams
Location: Washington, Klickitat County Latitude: 46.206° N Longitude: 121.49° W Elevation: 3,742 (m) 12,277 (f) Volcano type: Stratovolcano Composition: Basalt to Andesite Most recent eruption: 3,800 years ago Threat Potential: High Mount Hood
Location: Oregon, Clackamas/Hood River Counties Latitude: 45.374° N Longitude: 121.695° W Elevation: 3,426 (m) 11,240 (f) Volcano type: Stratovolcano Composition: Andesite to Dacite Most recent eruption: 1865 AD Threat Potential: High Three Sisters
Location: Oregon, Lane County Latitude: 44.103° N Longitude: 121.768° W Elevation: 3,157 (m) 10,358 (f) Volcano type: Complex volcano Composition: Andesite to Rhyolite Most recent eruption: 2,000 years ago Threat Potential: High Newberry
Location: Oregon; Deschutes, Klamath and Lake Counties Latitude: 43.722° N Longitude: 121.229° W Elevation: 2,434 (m) 7,986 (f) Volcano type: Shield-shaped Composition: Basalt to Rhyolite Most recent eruption: 1,300 years ago Nearby towns: Sunriver, Bend, LaPine, Redmond Threat Potential: High Crater Lake
Location: Oregon, Klamath County Latitude: 42.93° N Longitude: 122.12° W Elevation: 2,487 (m) 8,159 (f) Volcano type: Caldera Composition: Basalt to Rhyolite Most recent eruption: 6,600 years ago Threat Potential: High Medicine Lake
Location: California, Siskiyou & Modoc Counties Latitude: 41.611° N Longitude: 121.554° W Elevation: 2,412 (m) 7,913 (f) Volcano type: composite (red map area) Composition: basalt to rhyolite Most recent eruption: 950 years ago Nearby towns: Malin, Merrill, Tulelake, Klamath Falls (OR) Threat Potential: High Mount Shasta
Location: California, Siskiyou County Latitude: 41.409° N Longitude: 122.193° W Elevation: 4,317 (m) 14,163 (f) Volcano type: Stratovolcano Composition: andesite, dacite Most recent eruption: 200- 300 years ago Nearby towns: Weed, Mount Shasta, Edgewood, Dunsmuir Threat Potential: High Lassen Volcanic Center
Location: California, Shasta County Latitude: 40.492° N Longitude: 121.508° W Elevation: 3,187 (m) 10,456 (f) Volcano type: stratovolcano Composition: andesite, dacite Most recent eruption: 1917 Nearby towns: Mineral, Viola Threat Potential: High Mount Bachelor
Location: Oregon, Deschutes County Latitude: 43.979° N Longitude: 121.688° W Elevation: 2,764 (m) 9,068 (f) Volcano type: Stratovolcano Composition: Basalt to Andesite Most recent eruption: About 9,500 years ago Threat Potential: Moderate Mount Jefferson
Location: Oregon, Jefferson/Linn/Marion Counties Latitude: 44.674° N Longitude: 121.8° W Elevation: 3,199 (m) 10,495 (f) Volcano type: Stratovolcano Composition: Andesite to Dacite Most recent eruption: During last glaciation ~15,000 years ago Threat Potential: Low/Very Low Belknap
Location: Oregon, Linn County Latitude: 44.285° N Longitude: 121.841° W Elevation: 2,095 (m) 6,873 (f) Volcano type: Shield volcano Composition: Basalt, Basaltic Andesite Most recent eruption: 1500 years ago Nearby towns: Sisters Threat Potential: Low/Very Low Black Butte Crater Lava Field
Location: Idaho, Snake River Plain Latitude: 43.18° N Longitude: 114.35° W Elevation: 1,478 (m) 4,849 (f) Volcano type: Shield volcano Composition: Basalt Threat Potential: Low/Very Low Blue Lake Crater
Location: Oregon, Jefferson County Latitude: 44.411° N Longitude: 121.774° W Elevation: 1,230 (m) 4,035 (f) Volcano type: Maar Composition: Basalt Most recent eruption: 1300 years ago Nearby towns: Sisters Threat Potential: Low/Very Low Cinnamon Butte
Location: Oregon, Douglas County Latitude: 43.241° N Longitude: 122.108° W Elevation: 1,956 (m) 6,417 (f) Volcano type: Scoria cone Composition: Basalt Most recent eruption: between 7,780 and 15,000 years ago Threat Potential: Low/Very Low Craters of the Moon Volcanic Field
Location: Idaho, Snake River Plain Latitude: 43.42° N Longitude: 113.5° W Elevation: 2,005 (m) 6,578 (f) Volcano type: Cinder cones Composition: Basalt Threat Potential: Low/Very Low Davis Lake Volcanic Field
Location: Oregon, Deschutes County Latitude: 43.641° N Longitude: 121.818° W Elevation: 1,494 (m) 4,902 (f) Volcano type: Lava flows Composition: Andesite Most recent eruption: 5,300-5,600 years ago Nearby towns: Gilchrist, La Pine Threat Potential: Low/Very Low Devils Garden Lava Field
Location: Oregon, Lake County Latitude: 43.512° N Longitude: 120.861° W Elevation: 1,698 (m) 5,571 (f) Volcano type: Volcanic field Composition: Basalt Most recent eruption: Holocene Nearby towns: La Pine, Gilchrist, Sunriver, Wagontire Threat Potential: Low/Very Low Diamond Craters Volcanic Field
Location: Oregon, Harney County Latitude: 43.095° N Longitude: 118.785° W Elevation: 1,435 (m) 4,708 (f) Volcano type: Volcanic field Composition: Basalt Most recent eruption: 7,790 to 7,320 years ago Nearby towns: Diamond (8 mi), New Princeton (18 mi), Burns (50 mi) Threat Potential: Low/Very Low Four Craters Lava Field
Location: Oregon, Lake County Latitude: 43.361° N Longitude: 120.669° W Elevation: 1,501 (m) 4,925 (f) Volcano type: Volcanic field Composition: Basalt Most recent eruption: 13,000 years ago Nearby towns: La Pine, Gilchrist, Sunriver, Wagontire Threat Potential: Low/Very Low Hell's Half Acre Lava Field
Location: Idaho, Bonneville/Bingham Counties Latitude: 43.5° N Longitude: 112.45° W Elevation: 1,631 (m) 5,351 (f) Volcano type: Shield volcano Composition: Basalt Most recent eruption: 5,200 years ago Threat Potential: Low/Very Low Indian Heaven Volcanic Field
Location: Washington, Skamania County Latitude: 45.93° N Longitude: 121.82° W Elevation: 1,806 (m) 5,925 (f) Volcano type: Shield volcanoes Composition: Basalt to Andesite Most recent eruption: 9,000 years ago Threat Potential: Low/Very Low Jordan Craters Volcanic Field
Location: Oregon, Malheur County Latitude: 43.147° N Longitude: 117.46° W Elevation: 1,473 (m) 4,833 (f) Volcano type: Volcanic field Composition: Basalt Most recent eruption: 3,200 years ago Nearby towns: Jordan Valley Threat Potential: Low/Very Low Lava Mountain Lava Field
Location: Oregon Latitude: 43.472° N Longitude: 120.754° W Elevation: 1,711 (m) 5,614 (f) Volcano type: Volcanic field Composition: Basalt Most recent eruption: 13,000 years ago Nearby towns: La Pine, Gilchrist, Sunriver, Wagontire Threat Potential: Low/Very Low Sand Mountain Volcanic Field
Location: Oregon Latitude: 44.38° N Longitude: 121.93° W Elevation: 1,664 (m) 5,459 (f) Volcano type: Cinder cones Composition: Basalt, Basaltic Andesite Most recent eruption: About 2,000 years ago Threat Potential: Low/Very Low Wapi Lava Field
Location: Idaho, Snake River Plain Latitude: 42.88° N Longitude: 113.22° W Elevation: 1,604 (m) 5,262 (f) Volcano type: Shield volcano Composition: Basalt Most recent eruption: 2,270 years ago Threat Potential: Low/Very Low West Crater Volcanic Field
Location: Washington, Skamania County Latitude: 45.88° N Longitude: 122.08° W Elevation: 1,329 (m) 4,360 (f) Volcano type: Volcanic field Composition: Basalt to Andesite Threat Potential: Low/Very Low