How should river be managed? Flashcards
Should we change out approach?
- Yes councils should move to soft engineering
- But no climate change - rivers rising so need hard engineering
Give two examples of soft engineering?
- Afforestation
- Planing restrictions
Explain Afforestation
Tress intercept water with leaves. Slows river movement and stores water (Vegetation storage)
Explain Planning restrictions
Stop development on food plains and limit uses to agricultural (Low value land)
Why is Soft engineering good?
Cheaper options and have little impact on environment
Give three examples of Hard engineering?
Dams
Dredging
River engineering
Explain Dams
Control water to create lakes and limit flood downstream
Explain Dredging
Removes slit and sand from the river bed to increase the channel’s capacity
Explain River engineering
Straightening the channel allows faster flow of water to the sea
Why is Hard engineering bad?
Expensive and requires maintenance. Larger impacts on the environment
