CONTOUR SURVEY IN DHAKA FOR DUMMIES

The vertical distance in between any two consecutive contours is named a contour interval. Suppose a map includes contour traces of a hundred m, 98 m, 96m, and the like.An isohyet or isohyetal line (from Ancient Greek ὑετός (huetos) 'rain') is a line on the map becoming a member of points of equal rainfall in a very given period of time. A m