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Water Borehole


 
 Borehole Number: BH10145

 
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.40944 , 25.64847
 Location: Letlhakane
 Location Description: LETLHAKANE

 
 Start Drill: 2004-12-12
 End Drill: 2004-12-20
 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: 9.06 M3/hr
 Static Water Level: 22.6 m
 Borehole Water Strike: 140 Metres
 End of Hole (Depth): 205 Metres
 Hole Diameter: 381 Millimetres

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 23overburden to kalahari sands (0-1m), calcrete (1-7m) and pinkish-red clays (7-19m)
2.23 27basalt, highly weathered, brownish
3.27 47basalt, moderately weathered, purple
4.47 72basalt, purple to grey
5.72 138basalt, moderately weathered , purple with calcite
6.97 138basalt, fresh , grey
7.138 140transition zone from basalt to sandstone
8.140 145sandstone, light brown, fine grained
9.145 147sandstone, mixed with basalt
10.147 156sandstone, light to deep brown, fine grained
11.156 158sandstone mixed with basalt
12.158 194sandstone, brown to orange , fine grained with basalt occuring between 175-178m
13.200 205mudstone, brick red, very fine grained and sticky with basalt re-occuring at 204-205m

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