What is the name for an area of the flood plain that are allowed to flood and one disadvantage?
Term: Washland / Disad: Land that could have been developed on, for example, for housing is unusable.
Oops!
Check
Okay!
Check
banana
Go to last place!
Oops!
star
Double points!
Okay!
shark
Other team loses 15 points!
Okay!
thief
Give points!
5
10
15
20
25
5
What are the disadvantages of channelisation?
Increasing the discharge (amount of water flowing past at a given time) can threaten further downstream after heavy rain.
Oops!
Check
Okay!
Check
eraser
Reset score!
Oops!
gift
Win 5 points!
Okay!
shark
Other team loses 25 points!
Okay!
thief
Give points!
5
10
15
20
25
5
A disadvantage of dams and reservoirs.
Sediment is trapped behind the dam, reducing the amount carried downstream to floodplains, which lowers alluvium deposition, therefore reduces soil fertility.
Oops!
Check
Okay!
Check
5
What is an embankment (manmade levee)
High banks built on/near river banks
Oops!
Check
Okay!
Check
10
What is the term for extra channels built next to rivers or leading from them and an advantage?
Term: Flood Relief Channels / Adv: The river can be re-routed to by-pass settlements under threat.
Oops!
Check
Okay!
Check
5
An advantage of River restoration (restoring the river's original course)
Can slow rivers down preventing flooding downstream by removing levees & restoring meanders or more attractive or habitats for wild life.
Oops!
Check
Okay!
Check
5
A disadvantage of Flood Abatement
Coniferous trees are often planted as they grow fast but they increase soil acidity through needle litter, which can reduce soil fertility therefore affecting
Oops!
Check
Okay!
Check
boom
Lose 50 points!
Oops!
gift
Win 20 points!
Okay!
fairy
Take points!
5
10
15
20
25
thief
Give points!
5
10
15
20
25
5
How does planting trees (afforestation) act as a flood managment?
The trees intercept the rain water reducing surface runoff
Oops!
Check
Okay!
Check
5
An advantage of embankments (man made levees)
They can have walkways or roads on top of them increasing the amenity facilities in the area-multi purpose.
Oops!
Check
Okay!
Check
10
What is the term for barriers that hold back water and the term for the artificial lake behind it?
Dam & Reservoir
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
fairy
Take points!
5
10
15
20
25
gift
Win 10 points!
Okay!
thief
Give points!
5
10
15
20
25
5
What is the term for deepening and/or straightening the the river?
Channelisation
Oops!
Check
Okay!
Check
5
What is the advantage of channelisation?
Reduces channel friction, increasing velocity (water speed) increasing discharge which reduces the risk of flooding in that area.