THE BEST SIDE OF CONTOUR SURVEY IN BANGLADESH

The vertical length amongst any two consecutive contours is referred to as a contour interval. Suppose a map consists of contour lines of one hundred m, 98 m, 96m, and so on.An isohyet or isohyetal line (from Historic Greek ὑετός (huetos) 'rain') is really a line with a map becoming a member of details of equivalent rainfall inside of a spec