Background Flashcards
1
Q
What do they have the second largest of?
A
Tidal range in the world (over 14km)
2
Q
What do low tide conditions do?
A
Inaccessible by water for up to 14 hours a day
Only exposed mudflats are visible
3
Q
What was common in the inner harbour?
A
Tidal flooding due to leaky lock gates
4
Q
What is the shape and length of barrage?
A
S shaped
1.1km long
800 metre long embankment
300 metre concrete section
5
Q
What are the sluice gates?
A
Fundamental and vital floor defence feature as they dissipate wave energy
6
Q
Length of sluice gates?
A
140 metres long
10.5 metres wide
7
Q
What happens on Thursday 4th November 1999?
A
200 hectare lake
Project cost £220 million
