Hydrographs, Flooding, River Management Flashcards
Name parts of a hydrograph
a- peak rainfall
b- rising limb
c- peak discharge
d- falling limb
Give four causes of the Boscastle flooding
- High tide
- Steep valley sides
- Overland flow
- Impermeable surfaces
Give two effects of the Boscastle flooding
- Roads blocked
- Property destroyed
What other examples of river flooding did you study?
Somerset levels in 2014
Give four causes of this flooding
- flat landscape
- lots of rainfall
- no dredging
- levels only 8m above sea level
Name 3 hard engineering river management strategies
- Dams
- Embankments
- Channelisation
Name 3 soft engineering river management strategies
- Washlands
- Land use zoning
- Afforestation
The size and energy of a wave depends upon 3 factors, what are they?
- fetch
- time wind has been blowing for
- strength of wind
What is it called when water washes up the beach?
Swash
What is it called when water washes back down the beach?
Backwash
What is a concordant coastline?
Where the geology is parallel to the coastline. It has one type of rock
What is a discordant coastline?
Where geology is at 90 degrees to the coastline. It has different types of rock
What is unconsolidated rock?
Rock that is only loosely compacted and that is not properly glued
