River Lea Restoration

Question 1

History of river Lee

Answer 1

Formerly industrial

Deamed the ‘remainders, as it become unusable

£4,000,000 Leaway project - made river more accessible

£50,000,000 from various government agencies - made river more plesent

Question 2

Before the river Lea restoration restoration

Answer 2

High risk of flooding

Contamination

Derelict

Lack of investment

Poor access to the canal

Question 3

After the restoration

Answer 3

Areas of the Olympic park were raised 3m forming a wetland

Channel was connect to flood plains

Vegetation was planted to encourage biodiversity

SUDs incorporated

50,000 tonnes of rubbish removed

2000 trees planted

400,000 metres cubed of soil cleaned

Question 4

What SUDs were used

Answer 4

Wetlands
Swales
Porous asphalt
Rainwater harvesting

Question 5

Failures of the river Lea restoration

Answer 5

Flood risk wasn’t improve upstream

Question 6

Challenges, before the river could be restored

Answer 6

Land had to be bought

Land was polluted

110 hectares of brownfield

Electricity cables were underground

Protests

Question 7

River lees flooding event?

Answer 7

1947

River discharge was 20x normal

Damages coat business £80,000

1.25 million people left without clean water

3000 hectares were flooded