River Lea Restoration

Question 1

History of river Lee

Answer 1

Formerly industrial

Deamed the ‘remainders, as it become unusable

£50,000,000 from various government agencies

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 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

Some areas of the river bank raised 3m to prevent flooding

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