| S.N. | Tectonic block | Maximum magnitude of earthquake |
| 1 | Bogra fault Zone | 7.00 |
| 2 | Tripura fault zone | 7.00 |
| 3 | Assam fault zone | 8.50 |
| 4 | Shillong plateau | 7.00 |
| 5 | Sub Dauki fault zone | 7.00 |