Coastal Defence Flashcards
1
Q
Location
A
Sea palling
2
Q
Defra policy
A
“Hold the line”
3
Q
Rock armour
A
150 thousand tonnes at foot of existing sea wall to prevent it being undermined
4
Q
Beach replenishment
A
1.4 million meters cubed of sand
5
Q
Off shore reefs
A
1995 completed at a cost of 5.9 million but stopped long shore drift
1996 further 5 built at 10.5 million pounds allowed long shore drift
6
Q
Costs
A
Groynes 7000 each
Rock armour 3000 per metre
Sea wall 4000 per metre
7
Q
Length of sea wall
A
8.4 km
8
Q
Environmental advantage
A
Norfolk broads and SSSI sites are protected
9
Q
Total cost of the scheme
A
10.7 million
10
Q
Date of sea wall construction
A
1954
11
Q
Economic advantage
A
Increased tourism
12
Q
Social advantage
A
Fishing on Rock armour
13
Q
Impact of groynes
A
Starve beaches downstream of sand
