The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level
A. 1500 m
B. 1505 m
C. 1475 m
D. 1485 m
Answer: Option D
This Question Belongs to Civil Engineering >> Water Supply Engineering
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which formula can I apply to get this solution ? I don't understand where you get this answer.
formula?