5 SIMPLE TECHNIQUES FOR CONTOUR SURVEY IN DHAKA

The vertical length amongst any two consecutive contours is called a contour interval. Suppose a map consists of contour strains of a hundred m, 98 m, 96m, and so forth.An isohyet or isohyetal line (from Historic Greek ὑετός (huetos) 'rain') is a line with a map signing up for points of equal rainfall in a presented interval. A map with isoh