THE BEST SIDE OF CONTOUR SURVEY

It varies from twenty m to 100 m. Closer intervals are demanded if floor amount varies abruptly. The cross- sectional line needn't be often be at proper angles to the primary line. This method is ideally suited to street and railway projects. Radial Line ApproachAn isohyet or isohyetal line (from Historical Greek ὑετός (huetos) 'rain') is re