CONSIDERATIONS TO KNOW ABOUT CONTOUR SURVEY

The vertical distance involving any two consecutive contours is known as a contour interval. Suppose a map consists of contour lines of 100 m, 98 m, 96m, and so on.An isohyet or isohyetal line (from Ancient Greek ὑετός (huetos) 'rain') is a line with a map becoming a member of points of equivalent rainfall inside a given period of time. A ma