Flooding and hard and soft enjineerinv

Question 1

When does flooding occur?

Answer 1

when a river bursts its banks and overflows onto the surrounding land

Question 2

What factors cause flooding?

Answer 2

prolonged rainfall
heavy rainfall
relief
geology
wegetation
urban land use

Question 3

What are the hard engineering for flooding?

Answer 3

embankments
flood walls
demointable flood barriers
flood relief chanel’s

Question 4

What are the soft engineering for flooding?

Answer 4

flood warnings
floodplain zoning

Question 5

Embankments

Answer 5

high banks built on or near riverbanks
cheap
looks unnatural

Question 6

Flood walls

Answer 6

artificial barriers designed to raise the height of river banks to hold more water
reduces flood risk
requires interior drainage

Question 7

Demountable flood barriers

Answer 7

a temporary structure that is only installed when needed
only up for a bit so only ugly for a bit
can only be used in specific locations

Question 8

Flood relief chanells

Answer 8

water flows into relief chanels and is taken to area where it can be absorbed or renters river downcourse
reduces flood risk
expensive

Question 9

Flood warnings

Answer 9

warnings for floodings are issued via newspaper, tv, radio, and internet so people can prepare
possessions can be saved
some people may not be able to access warnings

Question 10

Floodplain zoning

Answer 10

allowing only certain land use or the floodplain to reduce flooding to housing and important buildings
less damage caused
can’t change existing lane uses