dawlish warren Flashcards
what depositional landform is at dawlish warren
spit
what would happen if the spit broke through
increase risk of flooding to the railway line and cut of villages
where is dawlish warren
south coast (south of exeter)
what river is dawlish warren on
river exe
what is behind the spit
a wetland
what areas need protecting
the estuary
distal end
middle section
the amenity beach
why did the estuary need to be protected
important for birds, fishing and recreation
why did the distal end need to be protected
protects villages and the railway in the estuary. important for protected species and birds. increasing in size - affecting the channel
why did the middle section need to be protected
low beach - gabions exposed and damaged. too many people walking on sand dunes damaging them
why did the amenity beach need to be protected
beach became narrow, steep and pebbly, bottom of sea wall exposed limited dry beach at high tide
what year was flood protection put in place
2014
what new management put in place in 2017
groynes sea wall geotube gabions dredging
how much was spent at dawlish warren in 2017
12 - 14m
the new flood management reduced risk for how many properties
2,900+
what would happen if no defences where put in place
neck would break through
where was the sea wall put
the base pf the railway and along the start of a spit
what did the groynes do
help contain sediment
what did the geotube do
allow the neck not to be breached
why is the spit needed
to protect the economic environment behind
historically how mnay tourists did dawlish warren see
30-40 years ago
where where the gabions put
near the railway line
why was sand being removed from the bech
longshore drift
where does the removed sediment end up
pole sands - an area of sediment offshore
why would the risk of flooding be extremely high at certain times of year (if the spit broke through)
tidal river and spit
