| Borehole Number: |
| Coordinates Type: WGS 84 |
| Coordinates Format: Decimal Degrees (DD) |
| Coordinates: -22.012444 , 28.5305 |
| Location: Bobonong |
| Location Description: BOBONONG-BOBIRWA SUN DISTRICT |
| Start Drill: 2008-06-20 |
| End Drill: 2008-06-28 |
| Borehole Type: Groundwater |
| Drilling Method: Percussion |
| Drilling Rig(s): N/A |
| Sample Type: Water |
| Depth of Surface Casing: N/A |
| Hole Inclination: N/A |
| Estimated Yield: 63.5 M3/hr |
| Static Water Level: N/A |
| Borehole Water Strike: 284 Metres |
| End of Hole (Depth): 344 Metres |
| Hole Diameter: 203 Millimetres |
| Log Formation: |
| No. | From (m) | To (m) | Log Formation |
|---|
| 1. | 0 | 146 | Basalt, brownish grey, highly weathered with in divisions of white calcrete and tholeiitic |
| 2. | 146 | 149 | Sandstone, fine ,red-brown, soft/ friable |
| 3. | 149 | 160 | Basalt, grey, pink, green |
| 4. | 160 | 181 | Dolerite, dark grey mafic, calcite |
| 5. | 181 | 187 | Basalt/ sandstones, fine white marble, grey |
| 6. | 187 | 256 | Sandstone, fine, white, soft |
| 7. | 256 | 260 | Mudstone, green grey |
| 8. | 260 | 284 | Sandstones, reddish brown, fine grained with trace of mudstone. |
| 9. | 284 | 285 | Mudstone, greenish grey, flaky |
| 10. | 285 | 329 | Sandstone, red pink, brown, fine soft, friable |
| 11. | 329 | 336 | Mudstone, flaky, soft |
| 12. | 336 | 338 | Sandstone, pink soft, fine |
| 13. | 338 | 344 | Mudstone, brown red, soft, flaky |
© Botswana Geoscience Institute 2025 | www.bgi.org.bw | Disclaimer