the river exe

Question 1

location and length

Answer 1

83km , starts at exmoor to the sea at exmouth

Question 2

what rock type is most of the catchment

Answer 2

devonian sandstone which is impermeable

Question 3

highest elevation and where was it

Answer 3

500m in exmoor

Question 4

how much of land is agricultural farmland

Answer 4

60% meaning less interception

Question 5

annual discharge

Answer 5

• river responds slowly to rainfall
• heavy rainfall absorbed by peet moorland

Question 6

what does the wibleball reserviour do

Answer 6

helps supply water to exeter

Question 7

surface area of wibleball

Answer 7

150 football pitches

Question 8

what does wibleball help in terms of river flow

Answer 8

helps prevent peaks and troughs of water dischange, stores and releases in flooding and drought

Question 9

past floods of the river exe

Answer 9

1960, 2500 homes destroyed, half of the annual rainfall saturated in exeter

Question 10

was the exmoor mires project a success

Answer 10

• water table rose so more moisture retained in the soil
• storm flow and flood peaks reduced
• more diversity and opportunities for education and leisure

Question 11

what do the peat bogs do for the carbon cycle

Answer 11

restores 1 million tonnes of carbon by reventing oxidation

Question 12

exmoor mires project links to the water cycle

Answer 12

• restored the peat bogs to allow more water held
• ## slower throughflow so less water sediment carried meaning cleaner water better for wildlife