River Exe Flashcards
(9 cards)
Mnemonic if to cover key aspects
CLIMB
Catchment characteristics
Land use and management
Impact of human activity
Management strategies
Benefits of management
Location
Flows from exmoor to exmouth through Devon
Length
82.7 km
Rainfall
High
1,300 mm/year
Geology
Impermeable rocks (Devonian sandstone)
High surface run off
Land use
67% agriculture
15%woodland
Impact of human activity
Flood risk - urbanisation = increases surface run off (Exeter)
Agriculture compacts soil- reduce infilltration
Management strategies
Wimbleball reservoir - regulates flow to prevent floods
Peatland restoration - reduces run off by re-wetting bogs
Exmoor mires project - restored peat bogs to increase water storage
Benefits of management
Flood mitigation
Increased biodiversity
Improves water quality - less sediment and pollution
