What is a Contour Plan

Contour Plan or Contour Map that displays the topography of the Site. The map contains the outline lines showing the elevation variations on the site. It shows the physical characteristics of a site-its topography-using the contour lines for different heights.

A map that shows lines that include points of equal value and separate points of higher value from points of lower value. The most common types of contour curve maps are topographic maps of contour curves, which show the elevation of the earth's surface. Structural maps of contour curves are showing the elevation or depth of a formation, and the maps of sands or net and total productive zones, which show the variations of the thickness of a stratigraphic unit.

Characteristics

A contour plan is made up of contour lines and represents the surface shape of the earth. Contour lines are imaginary lines that connect points with the same elevation. Contour lines are known to be below or above sea level. Together, multiple contour lines can create a map of the surface of the earth called topographic map.

Function

A contour plan is used to show elevations in a two-dimensional plane. According to PhysicalGeography.net, contour maps "use a variety of symbols to describe natural and man-made features, such as routes, buildings, mines, lakes, streams, and vegetation." The maps are used for recreational activities, such as hunting and fishing, and also for topography, urban planning, and resource management.

Meaning

Contour maps are effective to show the landscape of space. The contour lines that are more closely spaced show a very steep landscape. In contrast, contour lines spaced less closely identify a landscape that is flatter with a smoother slope. In addition, the valleys are shown with V-shaped curved lines upward and the ridges are represented by V-lines downward.

Contour lines translate three-dimensional features of the Earth into a two-dimensional topographic map. Topographic maps are useful for hiking and orientation. They are also for planning land use.

There are three main types of contour lines that you can find on a topographic map.

Index contour

The index outline is marked by a dark brown line. It will have the elevation printed periodically throughout it.

Intermediate contour

The intermediate contours are thinner brown lines. There are four intermediate contours for each index. The contour interval is printed on the map legend.

Supplementary contour

A supplementary contour works when the elevation changes are minimal. They are mainly used to represent smaller changes in elevation than that of an intermediate contour. The supplementary contours are brown lines cut.

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