How To Draw A Topographic Map Contour Lines

One tick mark is drawn on the triangle where a contour representing elevation 2400 intersects.

How to draw a topographic map contour lines. Trace the curve made by connecting the plotted points. Plot a point for each contour on the profile paper using the marks from where the contour intersected the cross section line and the value of its elevation from the topographic map. Note that three tick marks are placed where contours representing elevations 2500 2600 and 2700 intersect. Co ntour li nes are the greatest distinguishing feature of a topographic map.

Contour intervals tell you the change in elevation between any two contour lines. Practice map 1 profile b 6. Cartographers surveyors engineers and architects use contour lines to represent 3d terrain in flat formats like maps and site drawings. Chapter 4 where are you going.

This page is provided for you to use to draw the cross sections of the topographic contour maps you made in questions 1 and 2 on lab 9. Chapter 5 how to read contour lines and look for landscape features. Read on to find out the best tips on how to read a map like a pro. Topographic map chorochromatic maps dissymmetric map contour geography amandeep lamba.

Then draw smooth lines and label them. Contours are to be placed every ten feet. Topographic map cross section profiles. Sometimes you have contour lines for a building site that you want to model in.

Practice map 2 profile d c. Chapter 6 start travelling. Chapter 1 choosing the right map. You can find the contour interval in the map key usually located underneath the scale of the map at the bottom center.

Chapter 3 where are you. Make sure students understand that contour maps though 2 dimensional use contour lines to show elevation above sea level. To understand all map symbols see the us gov document. Chapter 2 understanding the key features.

Contour lines show elevation and the shape of the terrain. The contour interval is 50 feet according to the map key. Contour lines represent lines connecting points of equal elevation above sea level contour lines never cross split or die off. Where the lines are close together the ground between them is steep.

Where the lines are far apart the slope is less steep. Chapter 7 staying on track. 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. Constructing a topographic map by drawing in contours can be easily done if a person remembers the following rules regarding contour lines.

Learn how to draw contour lines by first plotting elevation points. Divide 300 feet by 3 to get one contour every 100 feet. The contour lines then portray the 3 dimensional shape of the surface of.