• is clear and simple • includes a precise title or caption • states the source – where it came from or who created it.
FIGURE2 Managing þood risks
New development areas
Using flood-proof materials or minimum floor heights makes buildings more resilient to floods.
Land filling of low-lying areas lifts buildings above a set flood level.
Zoning setbacks keep buildings away from more hazardous areas.
Existing development areas
Constructed levees can
Voluntary or compulsory purchase can remove flood- prone houses from habitation.
Some existing buildings can be raised above the flood levels or built using flood-resistant materials to reduce flood damage.
protect houses in flood-prone areas.
8.12.2 Showme How to interpret a diagram You will need: • a diagram (see FIGURE3 ) • any information that is related to the diagram. Model
Rainfall amount and intensity are key factors in þooding, but other factors also matter. In a catchment, land use affects how much rainwater enters rivers. Water can soak into unsaturated soil, but urban areas with hard surfaces lead to more run-off into drains and creeks. Vegetation slows water movement, while dams control downstream þow. Land shape is crucial too, as water runs faster on steep slopes. Procedure Step1 Identify and carefully read the diagram’s title because it helps you understand its purpose. The diagram in FIGURE3 illustrates factors that can affect þooding, which are explained under the diagram.
Jacaranda Humanities Alive 7 Victorian Curriculum Third Edition
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