What Is Land Contouring?

How do you read land contours?

Closely spaced contour lines indicate steep slope.

Widely spaced contour lines indicate gentle slope.

Equally spaced contour lines indicate uniform slope.

Closed contour lines with higher elevation towards the centre indicate hills..

What’s another word for contour?

Some common synonyms of contour are outline, profile, and silhouette.

What are the disadvantages of contour farming?

Therefore, contour farming alone is not sufficient to control erosion on steep, long slopes, erodible soils, and during erosive rains. The major drawbacks of contour farming are frequent turning involving extra labor and machinery time, and loss of some area that may have to be put out of production.

How does contour farming conserve soil?

Conservation Choices: Contour FarmingContour farming can reduce soil erosion by as much as 50 percent compared to up and down hill farming.By reducing sediment and runoff and increasing water infiltration, contouring promotes better water quality.

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…

Why can’t contour lines cross?

Contour lines can never cross one another. Each line represents a separate elevation, and you can’t have two different elevations at the same point.

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 are the advantages of contour farming?

Contour FarmingContouring can reduce soil erosion by as much as 50% from up and down hill farming.By reducing sediment and runoff, and increasing water infiltration, contouring promotes better water quality.

Why contour farming is done?

Contour farming, the practice of tilling sloped land along lines of consistent elevation in order to conserve rainwater and to reduce soil losses from surface erosion.

What does land contours mean?

In cartography, a contour line (often just called a “contour”) joins points of equal elevation (height) above a given level, such as mean sea level. 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.

What do you mean by contouring?

Contour is the outline or shape of something. … Contour comes from the Italian contorno meaning “to draw a line,” which is precisely what you are doing when you trace the contour of something. A road that contours a mountain follows along its edge and a mattress that contours to your body, adjusts to your shape.

What is the use of contours?

Contour map provides useful information for locating a route at a given gradient such as highway, canal, sewer line etc. When the intervisibility between two points can not be ascertained by inspection of the area, it can be determined using contour map.