How Do You Label Contour Lines On A Topographic Map?

What are the characteristics of contour lines?

Other characteristics of contour lines are: – Uniform slopes have uniformly spaced lines.

– Along plane surfaces, contour lines are straight and parallel.

– Contour lines are perpendicular to lines of steepest slopes.

– For summits or depressions, contour lines most close upon themselves..

How do you label contour lines?

Right-click the layer name in the ArcMap table of contents and select Properties. Click the Labels tab to set the contour line properties. Verify the Label features box is checked. In the Method drop-down box choose Label all the features the same way.

What are the 5 Rules of contour lines?

Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color.

What does contour line mean?

Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level. map: contour lines. The diagram illustrates how contour lines show relief by joining points of equal elevation.

How do you add contour lines to a map?

You can can add contour lines to a raster-based surface in your map to create a contour or topographic map. You add contour lines to surface layers in Display Manager. In Display Manager , right-click a surface layer, and select Create Contour Layer.

What does a steep slope look like on a topographic map?

Closely-spaced contour lines indicate a steep slope, because the elevation changes quickly in a small area. Contour lines that seem to touch indicate a very steep rise, like a cliff or canyon wall. Broadly spaced contour lines indicate a shallow slope.

How do contour lines work?

Contour lines are lines drawn on a map connecting points of equal elevation, meaning if you physically followed a contour line, elevation would remain constant. Contour lines show elevation and the shape of the terrain. … In order to keep things simple, topographic maps show lines for certain elevations only.

What is a contour line on a topographic map?

The distinctive character- istic of a topographic map is that the shape of the Earth’s surface is shown by contour lines. Contours are imag- inary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level.

What are 3 types of contour lines?

There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary.Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. … Intermediate lines are the thinner, more common, lines between the index lines.More items…

How do you label contour lines in Civil 3d?

Click Annotate tab Labels & Tables panel Add Labels menu Surface Contour – Multiple At Interval . Select the contours to label by specifying the start and end points of the contour label line. Specify the interval and press Enter .

What is the space between contour lines called?

The space between the contour lines is called the contour interval and represents a specific (set) distance. If the contour interval is 50 feet, the vertical space between the two contour lines is 50 feet.

Why do we use contour lines?

The purpose of contour lines is to represent the tridimensional shape of the terrestrial surface on a bidimensional map. Contour lines are the intersection of an horizontal plane parallel to the reference level and the topographical surface to describe. Consequently: Contour lines are always closed curves.