The problem

Imagine buying a dream home by the coast, only to find it at risk of falling into the ocean within a few years. This scenario is more common than you might think, and it highlights the importance of understanding coastal erosion before making such an investment.

In a recent episode of the Coastal Geohazards Podcast, I shared a story about a property owner who faced this exact situation. The owner bought a house on a cliff, assured by a coastal engineer that the average erosion rate was about one meter per year. With a 50-meter wide beach in front, the owner calculated they had 50 years to enjoy the property. However, the beach disappeared much sooner, putting the house at risk.

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Key Takeaways

• Consult Experts Seek advice from coastal engineers about erosion rates and existing defenses.
• Understand Variability Erosion rates can vary significantly year to year. While the average might be one meter, extremes can reach over 20 meters in a single year.
• Consider Beach Width A wide beach offers protection, but its size can change due to sediment movement. Relying solely on current beach width is risky.

Look beyond average erosion rates; consider maximum and minimum values. Assess how the beach might change over time, especially if planning a long-term investment. Understand that coastal environments are dynamic and require thorough research before purchasing property.

Coastal erosion is a complex issue that requires careful consideration.

By understanding the risks and consulting experts, you can make informed decisions about coastal property investments.

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