Aim how to read a topographic map
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Aim: How to Read a Topographic Map. Objective: Ability to read a map, correctly Vocabulary : topography, topographic. Most maps show distances Where things are located What is produced in an area. Topographic maps show the topography Show the contours of the land Show “height and depth”.

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Aim how to read a topographic map

Aim:How to Read a Topographic Map

Objective: Ability to read a map, correctly

Vocabulary: topography, topographic


Different kind of maps

Most maps show distances

Where things are located

What is produced in an area

Topographic maps show the topography

Show the contours of the land

Show “height and depth”

Different Kind of Maps


Topographic maps
Topographic Maps

Contour Interval

Simple Topographic Map

Contour Lines


Topographic maps1
Topographic Maps

More Complex Topographic Map


Topographic maps2
Topographic Maps

Topographic Map

Shows heights

What is the highest elevation of this map?

The lowest?


To read a topographic map
To read a topographic map

  • First determine the contour lines

  • Then determine the contour intervals


Contour lines
Contour Lines

  • Topographic maps use contour lines.

  • A contour line on a map connects points that are at the same distance above, or below, sea level

  • For example, the 20' contour line connects all points on the map that are exactly 20' above sea level.


Contour intervals
Contour Intervals

  • The contour interval is the vertical distance represented between adjacent contour lines.

  • If the contour interval is 10', then after the 20’ contour line would be the 30’ contour line.

  • If a point on a map is between the 20' and the 30' contour lines, then you know its greater than 20' above sea level and less than 30' above sea level


Contour intervals1
Contour Intervals

  • The spacing of contour lines on a map tells you how "steep" the slope is.

  • If you turned a soup bowl upside down it would look like this



Examine this topographic map1
Examine this topographic map

What is the lowest elevation?

What is the next highest elevation?

Now you can determine the interval


Examine this topographic map2
Examine this topographic map

Which side would you want to climb, N or S.

Why?



How would you draw a topo map
How would you draw a topo map? with a contour line?