Alaska

Aniakchak
Augustine - *
Emmons Lake
Chiginagak
Katmai
Novarupta
Redoubt -*
Spurr
Trident - *
Valley of Ten Thousand Smokes

British Columbia

Garibaldi
Garibaldi Lake
Meager Mountain

Washington

Adams - *
Baker - *
Battle Ground Lake
Beacon Rock - *
Glacier Peak
Goat Rocks
Indian Heaven Volcanic Field
Rainier - *
St. Helens
Simcoe Mountains

Oregon

Bachelor - *
Bailey
Belknap - *
Big Hole
Boring Lava Field
Broken Top
Brown Mountain
Christmas Lake Valley Basin
Crater Butte
Crater Lake
Diamond Peak
Fort Rock
Fort Rock Basin
Gorda Ridge
High Cascades
Hillman Peak
Hole-in-the-Ground
Hood - *
Jefferson - *
Jordan Craters
Lava Butte
Mazama
McLoughlin
Middle Sister
Moffitt Butte
Newberry - *
North Sister
Pelican Butte
Pilot Butte
Pitt
Powell Butte
Rocky Butte
South Sister
Tabor
Thielsen - *
Three-Fingered Jack
Three Sisters
Washington - *
Wizard Island

California

Amboy Crater
Black Butte - *
Clear Lake
Coso Volcanic Field
Glass Mountain
Golden Trout Creek Volcanic Field
Inyo Craters
Konocti
Lahars - *
Lassen Peak - *
Lava Beds
Long Valley
Mammoth - *
Medicine Lake
Mono Craters
Salton Buttes
Shasta - *
Shastina
Sutter Buttes