What Is A Contour Interval On A Topographic Map

What is a contour interval on a topographic map

On usgs maps contour intervals are usually 1 5 10 20 40 and 80 feet. Common topographic map symbols. Contour maps offer a deceptively high amount of information when analyzed skillfully and can be accessed on command using online mapping sites and applications.

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Considering the size of the area to be mapped contour intervals are assumed.

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. A contour map is a map illustrated with contour lines for example a topographic map which thus shows valleys and hills and the steepness or gentleness of slopes. Co ntour li nes are the greatest distinguishing feature of a topographic map.

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The space between contour lines on a topographical map is a contour interval. For instance if the map uses a 20 foot interval there are contour lines at zero 20 40 60 80 and 100 feet. It is the vertical distance by which various contour lines are separated from each other on a topographic map.

The contour interval is the difference in elevation between two adjacent contour lines.

Contour lines are spaced by contour intervals and represent areas on land that lie the same distance above sea level taken to be zero feet 0 by convention.
How to calculate the contour interval of the maps.
Contour lines show elevation and the shape of the terrain.
The difference is usually represented by each contour line on the map.

If the contour interval is not printed on the map it can be calculated.

Contour interval is the actual change in elevation represented by the space between two adjacent topographic rings. Essentially topographic maps represent the three dimensional landscape of earth within the two dimensional space of a map. The contour interval of a contour map is the difference in elevation between successive contour lines.

A contour interval in the survey is the vertical distance or the difference in elevation between the two contour lines on a topographic map.

A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map.
A contour interval is the difference in elevation between various contour lines.
For example if there is a contour interval of 20 feet each topographic line.
The contour interval is an even space that represents an increase in elevation.

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Topographic maps use a combination of colors shading and contour lines to represent changes in elevation and terrain shape. A contour map consists of contour lines for a given geographic region. A map with contour lines on it is called a topographic map.

Green River Topographic Map Activity 1 What Is The Contour Interval Ppt Download