Rivers - Management

Question 1

Why are rivers managed?

Answer 1

To provide water supply
To improvemwater quality
To prevent/reduce flooding
Increase the river use for leisure and recreation

Question 2

Flood barrage

Answer 2

Used to reduce the risks of flooding by river and sea

Question 3

Hard engineering

Answer 3

Ways to reduce flooding/ manage the river by overcoming nature with man made structures (usually expensive)

Question 4

Soft engineering

Answer 4

Ways to reduce flooding/ manage the river with schemes using the knowledge of a river(usually cheap)

Question 5

Levees

Answer 5

High banks on the river due to lots of deposition, usually in times of flood

Question 6

Channel straightening

Answer 6

Straightening rivers so that flood water is able to flow more quickly out to sea

Question 7

Dredging

Answer 7

Deepening a river by removing sand and silt to increase the channel size and improve navigation by boats

Question 8

Gabions

Answer 8

Rocks set in wire cages to reduce erosion

Question 9

Flood plain zoning

Answer 9

Restricting the land close to a river to reduce the impact of floods

Question 10

Sustainable management

Answer 10

New developments that do not destroy the environment but improve it