Water and Carbon:River exe

Question 1

location

Answer 1

in Devon
source is Exmoor and Mouth is Exmouth
flows through Tiverton and Exeter

Question 2

maximum and minimum elevation

Answer 2

maximum 500m in the north
and minimum 25m towards mouth

Question 3

geology

Answer 3

85% of the catchment area is impermeable rock-mainly sandstone

Question 4

land use

Answer 4

67% of land is agricultural grassland peat bogs and woodland

Question 5

65%

Answer 5

how much run off makes of the water balance

Question 6

positive human activity

Answer 6

Wimbleball resevoir:
built in 1979 and provides water to Exeter and East Devon
Prevents extreme fluctuation of water through the year

Question 7

negative human impact

Answer 7

drainage ditches were dug into peat bogs for farming
this increases water flow and also more carbon dioxide into atmosphere

Question 8

what was done to rectify negative human impact?

Answer 8

Exmoor Mires project-since 1998
aimed to restore peat bogs and block drainage ditches
this will increase infiltartion capacity and more carbon storage

Aims to restore 2000ha

Question 9

social impacts

Answer 9

december 2012-river burst its banks:
25 had to be evacuated due and 30 homes flooded