| Area | Curve type | Curve characteristics | No of geoelectric layers |
| Alakahia, Rumuodara, Rumuodomaya, Oginigba | AK | ρ1 < ρ2 < ρ3 > ρ4 | 4 |
| Aluu, Ogbogoro, Rumuepiriekom, Rumuokwuta, Rumuola, Rumuobiakani, Rumuomasi, | A | ρ1 < ρ2 < ρ3 | 3 |
| Ozuoba | K | ρ1 < ρ2 > ρ3 | 3 |
| Rumuekeni, Akpajo, Elelenwon, Rumuebekwe, Rumurolu, Rumueme | KH | ρ1 < ρ2 > ρ3 < ρ4 | 4 |
| Eliozu | AH | ρ1 < ρ2 < ρ3 < ρ4 | 4 |
| Rumuigbo | Q | ρ1 > ρ2 > ρ3 | 3 |
| Rumuokoro | KK | ρ1 < ρ2 > ρ3 > ρ4 | 4 |
| Mgbuosimini | H | ρ1 > ρ2 < ρ3 | 3 |
| Okporo | AA | ρ1 < ρ2 < ρ3 < ρ4 < ρ5 | 5 |