Holderness Coastal Management Flashcards
What defence is at Bridlington?
Wooden groynes and a 4.7 km sea wall
What defences are at Hornsea?
A sea wall, wooden groynes and rock armour.
What defences are at Mappleton?
Defences including two Rock groynes were built at Mappleton in 1991. They cost £2 million and were built to protect the village and coastal road from flooding.
What defences are at Withersea?
A sea wall and groynes to create wider beaches.
What defences are on spurn head?
The eastern side of Spurn head is protected by groynes and rock armour. This also protects the Humber Estruary behind spurn head.
What problems come with these hard engineering strategies?
1) Groynes protect local areas but cause narrow beaches to form further down the coast. This increases erosion down the coast e.g. Cowden farm ( south of Mappleton) is at risk of collapse into sea
2) the material produced from the erosion of Holderness is usually transported South to the Humber Estruary and down to the Lincolnshire coast. Reducing the amount of material that is eroded and transported south increases the rate of flooding in the Humber Estruary because there is less material to slow the floodwater down
3) the rate of coastal retreat along the Lincolnshire coast is also increased as less material is being added
4) Spurn head is at risk of being eroded away because less material is being added to it
5) bays are forming between protected areas and the protected areas are becoming headlands which are eroded more heavily. This means maintaining the defences in protected areas is becoming more expensive.
What distance of Holderness Coastline is protected by hard engineering?
11.4 km
