Contour Lines
Objectives

To understand the basics of contour lines. To be able to draw a simple cross-section profile.

Let's look at our first topic under Mapping Skills - Contour Lines.

A contour line on a map is a line that joins points of equal elevation. For example, below is a map with a series of spot heights (in metres) that have been measured. Contour lines can be interpreted for this landscape based on the data given.
Spot Heights Map
When drawing in contour lines one must first know the designated contour interval which is the difference in elevation between two successive contour lines. Contour intervals vary from one map to another depending upon the landscape presented. For the map above, let's see what it looks like with three contour lines drawn in using a five metre contour interval.
Contour Lines Example


Assignment Work

1) Download and print out the Contour Lines Example and complete the map by drawing in the 20, 25, and 30 metre contour lines. Remember that you are interpreting the landscape as best as possible based on the spot heights given.

2) Download, print out, and complete the following Contours Lab.

Note: All Mapping Skills work hence forth goes in "The Nature of Geography" section of your notebook.

3) When done, check the Contours Lab Key.

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