n=21

AN-1	DH-1 53)	KA-3
AN-3	DH-2 54)	SN-1
AN-4	DH-3 55)	SN-2
AN-5	DH-4	SN-3
AN-6	HN-1	SN-4
AN-7	KA-1	SN-5
AN-8	KA-2	SN-6

(Data obtained from these boreholes)

Figure 4.31 Relationship between elevation of ground surface and watertable