Level curves z18 utm wg84 06-24-19 dwg
Topographic plane contour lines z18 utm wgs84 topography is shown graphically by contour lines. each contour line is a continuous line; which forms a closed figure; either within or beyond the boundaries of the map or drawing (when these lines cross a man-made vertical feature; such as a wall or bleachers; that level curve will overlap with that feature in the plane). all points on the level curve are at the same elevation and all level curves are separated on a map by the interval of the curve; which is the difference in elevation between the curves. two or more contour lines are required to indicate a three-dimensional shape and the direction of a slope. the direction of the slope is always perpendicular to the contour lines and therefore; it changes according to the change of direction of the curves. water flows perpendicular to the contour lines in the downward direction. usually; for the same scale and level interval; the angle of inclination increases as the distance between contours decreases. equally spaced contours indicate an inclination that remains constant. contours never intersect except when there is an outgoing cliff; a natural bridge or some similar form of land. finally; in the natural landscape; contours are never divided or split (this is not always the case where the natural landscape and the man-made landscape meet).