| S/No. | Borehole Locations | Geomorphic Zones | Depth (m) | Salinity (mg/l) |
| 1. | Ahoada | CPS | 65.53 | 35.0 |
| 2. | Ogbo | " | 186 | 40.0 |
| 3. | Edeocha | " | 185 | 150.0 |
| 4. | Udiereke-Ubie | " | 76.20 | 5.7 |
| 5. | Abua | " | 60.96 | 43.0 |
| 6. | Joinkrama | " | 176.22 | 136.6 |
| 7. | Ndoni | " | 382 | 241.0 |
| 8. | Ebubu | " | 91.44 | 60 |
| 9. | Mbiama | FWS | 175 | 48.9 |
| 10. | Obibi | " | 76.22 | 50.0 |
| 11. | Zarama | SWS | 89 | 149.1 |
| 12. | Bassambiri | " | 250 | 500.0 |
| 13. | Atubo | " | 193 | 872.0 |
| 14. | Nembe | " | 193 | 21.0 |
| 15. | Ogbia | FWS | 101 | 180.0 |
| 16. | Brass | CBR | 192 | 116.0 |
| 17. | Emerego | " | 78 | 169.6 |
| 18. | Kolo | " | 101.59 | 425.4 |
| 19. | Amakalakala | FWS | 160.96 | 98.6 |
| 20. | Sangana | " | 60.96 | 50.0 |
| 21. | Oruma | FWS | 101.59 | 50.0 |
| 22. | Onne | CPS | 264 | 210.0 |
| 23. | Bien Gwara | " | 60.96 | 6.8 |
| 24. | Bodo | " | 80.56 | 210.0 |
| 25. | Baen | " | 60.96 | 27.9 |
| 26. | Kongho | " | 60.96 | 240.7 |
| 27. | Lubara | " | 60.96 | 60.25 |
| 28. | Baun | " | 60.96 | 60 |
| 29. | Opuoko | " | 60.96 | 60.25 |
| 30. | Kono | " | 60.96 | 450 |
| 31. | Kanni | " | 60.96 | 60 |
| 32. | Beeri | " | 60.96 | 62 |
| 33. | Sii Babbe | " | 60.96 | 72 |
| 34. | Soku | SWS | 95.0 | 50 |