River Exe Flashcards
Where is the River Exe’s source
Exmoor
Where is the River Exe’s mouth
Exmouth
How long is the river
82.7m
Which area do we look at
the upper catchment which is above the gaugin station in Thorverton
How much of the catchment is underlain by impermeable sandstone
84.4%
How much of the land is Grassland
67%
How much land is woodland
15%
Where are the peat bogs located
on the high ground of Exmoor
How much rainfall
1295mm
How much of the rainfall becomes runoff
68%
What is dug into the peat bogs which help causes higher inflation
drainage ditches which are often saturated and limit infiltration
What was the name of the reservoir that was constructed
Wimbleball
What does the reservoir do
help regulate the flow of the river
Where in England is the river
South West
What is the size of the catchment
601km^2
Name of tributory river
River Haddeo
how many houses are at risk of a 1 in 100 year flood
10%
Which city does it pass through
Exeter
how much of the land is arable farming
10%
How much of the land is peat bogs
3%
How much water do the peat bogs store after the restoration
1/3
Physical causing of flooding
Steep slopes
Underlying impermable sandstone
High levels of rainfall
Human causes of flooding
Land use - sheep farming/game shooting - compacting soil, deforestation may be needed
Imperable surfaces/urbanisation
Digging drainage ditches - reduces storage of water, more run off
Human interventions
Exmore myers project (blocking drainage ditches) - more water is stored
Wimbleball resovoir
