| Op | Formation | Thickness (m) | References |
| Intergranular Aquifer | Quaternary deposits | More than 300 | Abdullah, et al. 2016 |
| Fissured Aquifer | Balambo | 250 | Ali, 2007 |
| Kometan | |||
| Fissured-Karstic Aquifer | Avroman | 200 | Jassim and Goff, 2006 |
| Jurassic formation | From 80 to 200 | ||
| Non-Aquifer (Aquitard) | Qulqula | More than 500 | Jassim and Goff, 2006 |
| Shiranish | 225 | ||
| Tanjero | 2000 |