3) The River Tees, North East England Flashcards
Where is the river tees?
North east England
Where is the mouth?
North Sea
Features of the upper course
Steep V shaped valley
Many Rapids
Waterfall - High Force
Winstone
Why does it have to be managed?
Long history of flooding
Many homes and industries needing water supply m
What is Cow Green?
A reservoir built to provide water for the industries
How is the Tees managed?
Barrage Dredging Cutting off meanders Flood defences Afforestation
How has the Tees barrage made a difference?
Fresh water
Removes water to reduce risk of flooding downstream
How does dredging help?
Deep water channel
More room for water
Impact of defences on geomorphic processes
Dredging- more velocity = more erosion
Meander cut off = more erosion downstream
How does cutting off meanders help
Short route for water to travel across, moves faster and reduces flood risk
How does afforestation help?
Plants absorb water and stops it reaching streak
Where is the source?
Pennines
How tall is High Force?
over 21 metres
Main type of weathering and why
Freeze-thaw weathering
Cool temperatures
How does precipitation impact geomorphic processes?
Lots of precipitation makes the ground saturated and weak, making landslides more common
4 reasons why it needs to be managed?
Prevent flooding
Water supply
Increase water quality
Increase use for leisure and recreation
Largest reservoir
Cow Green Reservoir
What do reservoirs do?
Store water in times of heavy rainfall to be released in times of low flow or for industry
How do reservoirs impact geomorphic processes?
They limit the flow of water downstream
Material is therefore deposited in reservoir
Reduces sediment build up on floodplain
How do meander cut offs impact geomorphic processes?
River flows more quickly
Increased erosion and decreased deposition
Greater risk of flooding downstream
How does dredging impact geomorphic processes?
Increases river discharge
Increases velocity
Increases erosion
How does afforestation impact geomorphic processes?
Decreases discharge and velocity
Reduced erosion
Meanders and ox bow lakes less likely to form
How does deforestation impact geomorphic processes?
Increases surface run off when it rains
Increased discharge = more velocity = more erosion
