Soil
Regolith (clay, weathered rock)
Saturated regolith, below the water table
Weathered and fractured rock (top of bedrock)
Bedrock (crystalline basement)
Water table surface
Borehole in regolith
Borehole in bedrock
Water level in borehole (ring)
Wellhead
Monitoring station
Soil
Cover (soil, clay, laterite)
Saturated, below the water table
Weathered and fractured rock (the aquifer)
Fresh rock (crystalline basement)
Water table surface
Log: cover
Log: weathered or fractured rock
Log: fresh rock
Log: description not classified
Water level, where matched (ring)
Monitoring station