Relief and drainage can influence route ways – displayed on OS maps in the form of roads, railway lines and canals – in a number of ways. Ballina Area, Co. Mayo
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„„Roads usually occur at bridging points over rivers. „„
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Roads will avoid parts of rivers that flood regularly, e.g. floodplain (see Chapter 10: Rivers).
Roads avoid high altitude areas, preferring lowland areas, as they are easier to build on.
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z„ z„ z„
23 24 25 2617 Working with others:
Working with the person next to you, examine the OS map section showing Ballina and identify:
A bridging point
A road that avoids bodies of water An alternate route way (not a road)
Identify the height of the land in this OS map section and comment on how it has influenced the location of Ballina.
Key Words
Settlement Density Dispersed Linear Nucleated
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7.10 Settlement on an OS
Map A settlement is a place where people live. There are a number of different types of settlement that can be seen on an OS map.
Former/Historic settlement
Ancient or historical sites of where humans lived
Rural settlement Small villages and isolated houses Urban settlement Cities and towns Place names
