Borth Coastal Defences Essay

Broth Case Study “Broth is a valuable seaside town and its protection from coastal processes and flooding should be continued. ” What are the human and physical interests at Broth? There are many human and physical interests at Broth. Broth has a sandy beach and is a popular holiday seaside resort. There is a youth hostel in the village and caravan and camping sites. It is also the location of the Broth Animalcule. The wide beaches, attractive scenery and access to water make this a very popular and important holiday destination.

Much of the local economy is based on tourism, therefore it is important that it’s protection from coastal processes and flooding should be continued, because if its protection is stopped Broth will suffer the effects of coastal erosion and frequent flooding, which will damage the tourism industry in the area as shops and attractions will be damaged in floods or swept out into the sea by coastal erosion, which would be very detrimental as tourism is one of the main industries in the area and many of the local people rely on tourism as their income.

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Some of the physical interests at Broth include Coors Pocono, a raised peat mire which is part of he only UNESCO biosphere reserve in Wales. It is the most intact lowland raised bog in Europe and we can tell its national, European and international importance for conservation from its multiple designations such as Special Area of Conservation, Special Protection Area, Rams Convention on Wetlands, National Nature Reserve and Site of Specific Scientific Interest. Also an ancient submerged forest is visible at low tide along the beach, where stumps of oak, pine, birch, willow and hazel can be seen.

Also the Hymnals sand dunes are part of the Defy National Reserve which is one f the only 234 national nature reserves in the I-J. It is important that protection from coastal processes and flooding is continued otherwise all these unique and interesting physical features will be taken by the sea. What are the present coastal processes and flooding threats that occur at Broth? Many coastal processes and flooding threats occur at Broth. The coastline includes slow eroding rock cliffs, eroding boulder clay cliffs, shingle and long sandy beaches.

The shape of the beaches, sand dunes and estuary are constantly changing due to the action of the eaves, tides and currents that are moving sediment along the coast. The sand and silt that settles in the estuary form banks and marshes. The coastline is slowly receding due to the slow eroding rock cliffs and eroding boulder clay cliffs, and climate change has forced sea levels to rise and stronger winds, which makes the waves stronger and makes them beat against the cliffs, eroding them.

Rising sea levels encourage flooding, and also the effect of Post Glacial Rebound (sinking and rising land – in Broth’s case, sinking land. ) Sand from the southern end of the beach s gradually being eroded by long shore drift, the beach is getting thinner. Protection from coastal processes and flooding should be continued to stop these erosive processes and flood threats from devastating Broth. How is Broth’s coastline managed at present? At the moment there are quite a few ways in which Broth’s coastline is being managed at present.

There is a concrete wall to the southern corner, which absorbs the wave energy, timber breastwork reinforcing shingle/cobble ridge which is in fair condition. There are also some timber and concrete sea walls in front of individual properties. Timber grosses are positioned along the beach, which are in K condition but have some planks missing. The intertribal area consists of a gently sloping sandy beach, with areas of shingle and cobbles near the high water mark. There is also a steep shingle bank along the back of most of the beach, forming the deference line.

The beach becomes sandier to the North, sediment transport along Broth beach is generally northwards. In your view, which is the best way to manage the coastline at Broth effectively? In my opinion, I believe the option to Hold the Line is the best way to manage the Broth coastline effectively. The Hold the Line option is what is currently in place in Broth, and I would say is very effective at the moment as Broth has suffered no severe effects of coastal erosive processes or flooding, as the current management of the coastline has prevented anything from happening.

The option to Do Nothing would not be effective in anyway and would bring significant economic loss and massive social disruption. Holding the Line means that tangible assets and amenity value are protected. The only possible problem with the option to Hold the Line is that it has he potential to reduce long shore drift and cause environmental loss, however that is the only drawback, whereas the other options have much more severe drawbacks.

Also, holding the line is more economically beneficial that doing nothing as the result of the damage that will be caused by doing nothing is much greater than the cost of repairing the current sea defenses. How will future changes in coastal processes and flooding affect Broth? There is a 0. 5% (1 in 200) chance of major flooding happening each year, which could affect Broth greatly if defenses are not repaired. The beach is getting thinner and is less able to protect the pebble ridge (on which Broth is built on) from erosion.

If the council does nothing then the pebble ridge will be breached by storm waves and the town of Broth and Broth Bog (Coors Pocono) will be flooded by the sea. This could happen in the next 10-15 years. The peat bog at Coors Pocono will be covered by sea water at high tide and its existing ecosystem lost. Over the years erosion will punch more holes through the ridge and the sand dunes at Hymnals will be cut off and will form a small island. If the council does nothing to protect Broth then all the coastal recesses will gradual wear away at the town, with the village possibly needed to be evacuated.

Conclusion – should protection at Broth be continued? To conclude, I believe that protection at Broth should be continued with the hold the line approach, as this is the most effective and cost effective approach, and if protection at Broth should not be continued then the ecosystems within Broth will be drastically affected and the shoreline would alter severely. Damages are estimated to be in the region of Ell. 75 million, as the amenity and tourism values of the area would decrease drastically.