…while still remaining on the land surface? In the British Isles the answer is 3 metres (about 10 feet) below…
Water will flow through the ground if there are cracks in the rocks. If this water flows across a layer…
…while still remaining on the land surface? In the British Isles the answer is 3 metres (about 10 feet) below…
Water will flow through the ground if there are cracks in the rocks. If this water flows across a layer…