Quality Mountain Days
                                                                 & Advanced workshops

To determine the height of a feature on the map or of your position:

Make sure you have identified the right feature/position on the map

Look at the contour lines either side of the feature

If one is an index line (ie thicker) follow that  line until the altitude of that line is found,
If neither  is an index lines count the number of thinner lines crossed to reach the  index line then follow the index line to find its height. The add/subtract  the number of thin lines x the contour interval to/from the height of the  index line (you’re probably less likely to make an error with the maths if  you find the index line downhill from the point and then add to the height  of that).


on the map below, what is the height of the bothy at 674 347 & the start of the stream labelled Kirkdale at 673 344?

Bothy at 674 347
  • Bothy is next to index line with height 700m
  • It is uphill from that index line
  • No thin contour lines lie between the index line and the bothy
  • The contour interval is 10 m
  • The height is between 700m and 710m 
 Start of stream at 673 344
  • This lies between the 650m and 700m index line
  • There are two thin contour lines between the 650m index line and the start of the stream
  • The contour interval is 10m
  • The height is between 650m + 2 x 10m and 650m + 3 x 10
  • The height is between 670m and 680m


Important: Participation Statement

Climbing, hillwalking and mountaineering are activities with a danger of personal injury or death.
Participants in these activities should be aware of and accept these risks and be responsible for their own actions and involvement.

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