There are two ways of managing floods to reduce their impact
Soft engineering and hard engineering (same as with coasts)
It is a balance of how valuable the land is, how many people will be affected, how costly the management scheme is, and how effective + sustainable the management scheme will be
River management: Hard + Soft Engineering Now highlight, in different colours, the advantages and disadvantages of each scheme Hard Engineering Soft Engineering Dams Washlands Embankments Land-use zoning Flood Walls Afforestation Straightening and deepening the river Warning systems Storage areas
Flood walls are built around settlements and important factories or roads. They're quite expensive and don't look very natural. These are very effective at stopping flooding. Flood walls are also used in
This is where the land has different building controls depending on how far from the river the buildings lie. The land next to the river is un-used land and as the distance from the river increases so does the quality and the value of land rises. Important factories, schools, and most homes should be away from the river.
Read through the information on the choices of management schemes
You need two different colours of paper. On one piece, make notes on the River Derwent – the hard and soft engineering here. On the other colour, make notes on how the River Limpopo/Zambesi in Mozambique is managed.
Hard engineering techniques are that are imposed on the river. They try to the river. Examples of hard engineering are and . Soft engineering started to be used in the 1990s. Soft engineering methods work with the river and use processes. Examples include and .
dams structures natural afforestation flood walls land-use zoning control