Why is there a need to protect the coast at dawlish warren?

The coast at Dawlish Warren needs to be protected because it is at high risk of being damaged by coastal erosion. This is due to several factors, including:

1. Location: Dawlish Warren is located on the south coast of England, which is exposed to the full force of the prevailing south-westerly winds. These winds generate large waves that can batter the coastline and cause erosion.

2. Sediment Supply: The natural sediment supply to Dawlish Warren has been reduced due to the construction of groynes and seawalls along the coast. This has meant that there is less sand and gravel available to replenish the beach and protect it from erosion.

3. Rising Sea Levels: Climate change is causing sea levels to rise, which is putting additional pressure on the coast at Dawlish Warren. As the sea rises, it will reach higher up the beach and cause more erosion.

4. Storm Events: Severe storms, such as hurricanes and winter storms, can cause significant damage to the coast at Dawlish Warren. These storms can generate powerful waves and winds that can erode the beach and cause flooding.

To protect the coast at Dawlish Warren, a number of measures have been put in place, including:

- Construction of seawalls and groynes to help trap sediment and prevent erosion.

- Beach nourishment to replenish the sand and gravel on the beach.

- Managed retreat, which involves allowing certain areas of the coast to erode in a controlled manner in order to protect more important assets.