River Management Hard

Question 1

Levees

Answer 1

Increasing the height of the river using mud or concrete walls
A- River can hold more water
D- Expensive and river can spill over levees and go back into the channel after a flood

Question 2

Dams

Answer 2

Big walls built across rivers to control the flow of a river
A- River flow can be controlled and used for electricity
D- doesn’t flood naturally . Less fertile soil which is bad for farming. Expensive and damages environment

Question 3

Floodwalls

Answer 3

Concrete walls built along river banks
A- River can hold more water as it is made deeper
D- Expensive and stops water getting into the channel

Question 4

Widen river channel

Answer 4

A- Hold more water

D- Expensive and damages environment

Question 5

Concrete river channel

Answer 5

makes the banks and bed smoother for water to travel faster.
A- River don’t rill up as quickly because the water moves quicker
D- Downstream areas are at greater risk as water travels quicker to them

Question 6

Straighten or deepen river channel

Answer 6

A- Hold more water and moved quickly through channel

D- Downstream areas at greater risk. expensive and damages environment