| Alaska |
13 |
- Craters or Calderas are listed in this state |
1 |
- Lava Flow |
| Arizona |
28 |
- Craters or Calderas are listed in this state |
5 |
- Lava Flows |
| California |
24 |
- Craters or Calderas are listed in this state |
16 |
- Lava Flows |
| Colorado |
3 |
- Craters or Calderas are listed in this state |
0 |
- Lava Flow |
| Hawaii |
95 |
- Craters or Calderas are listed in this state |
120 |
- Lava Flows |
| Idaho |
20 |
- Craters or Calderas are listed in this state |
24 |
- Lava Flows |
| Montana |
2 |
- Craters or Calderas are listed in this state |
0 |
- Lava Flow |
| Nevada |
12 |
- Craters or Calderas are listed in this state |
1 |
- Lava Flow |
| New Mexico |
8 |
- Craters or Calderas are listed in this state |
0 |
- Lava Flow |
| Oregon |
22 |
- Craters or Calderas are listed in this state |
15 |
- Lava Flows |
| Texas |
1 |
- Crater or Caldera is listed in this state |
0 |
- Lava Flow |
| Utah |
3 |
- Craters or Calderas are listed in this state |
1 |
- Lava Flow |
| Virginia |
1 |
- Crater or Caldera is listed in this state |
0 |
- Lava Flow |
| Washington |
7 |
- Craters or Calderas are listed in this state |
6 |
- Lava Flows |
| Wyoming |
2 |
- Craters or Calderas are listed in this state |
0 |
- Lava Flow |
