3) The River Tees, North East England Flashcards Preview

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Flashcards in 3) The River Tees, North East England Deck (23):
1

Where is the river tees?

North east England

2

Where is the mouth?

North Sea

3

Features of the upper course

Steep V shaped valley
Many Rapids
Waterfall - High Force
Winstone

4

Why does it have to be managed?

Long history of flooding
Many homes and industries needing water supply m

5

What is Cow Green?

A reservoir built to provide water for the industries

6

How is the Tees managed?

Barrage
Dredging
Cutting off meanders
Flood defences
Afforestation

7

How has the Tees barrage made a difference?

Fresh water
Removes water to reduce risk of flooding downstream

8

How does dredging help?

Deep water channel
More room for water

9

Impact of defences on geomorphic processes

Dredging- more velocity = more erosion
Meander cut off = more erosion downstream

10

How does cutting off meanders help

Short route for water to travel across, moves faster and reduces flood risk

11

How does afforestation help?

Plants absorb water and stops it reaching streak

12

Where is the source?

Pennines

13

How tall is High Force?

over 21 metres

14

Main type of weathering and why

Freeze-thaw weathering
Cool temperatures

15

How does precipitation impact geomorphic processes?

Lots of precipitation makes the ground saturated and weak, making landslides more common

16

4 reasons why it needs to be managed?

Prevent flooding
Water supply
Increase water quality
Increase use for leisure and recreation

17

Largest reservoir

Cow Green Reservoir

18

What do reservoirs do?

Store water in times of heavy rainfall to be released in times of low flow or for industry

19

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

20

How do meander cut offs impact geomorphic processes?

River flows more quickly
Increased erosion and decreased deposition
Greater risk of flooding downstream

21

How does dredging impact geomorphic processes?

Increases river discharge
Increases velocity
Increases erosion

22

How does afforestation impact geomorphic processes?

Decreases discharge and velocity
Reduced erosion
Meanders and ox bow lakes less likely to form

23

How does deforestation impact geomorphic processes?

Increases surface run off when it rains
Increased discharge = more velocity = more erosion