Core Knowledge - Component 1 - Hydrographs, Flooding, River Management, Coasts Intro

Question 1

Name five key parts of a hydrograph.

Answer 1

• Peak discharge
• Rising limb
• Peak rainfall
• Falling limb
• Lag time

Question 2

Give some causes of the Boscastle flooding.

Answer 2

• High tide
• Steep valley sides
• Overland flow
• Impermeable surfaces
• Surface runoff
• Ground saturated due to storms in the days before
• Confluence of the RIver Valency and River Jordan

Question 3

Give two effects of the Boscastle flooding.

Answer 3

• Roads blocked by helicopters
• Property destroyed
• Emergency accommodation
• Vehicles carried out to sea
• Insurance costs increases for homeowners
• Tourism industry seriously affected