Coastal flooding can impact upon homes and key infrastructure close to the coast.

If the coast is eroding, permanent loss of homes or infrastructure can occur especially after a severe storm.

When things are contaminated with salt water this can cause longer term problems than with freshwater. For example, if a sewer treatment plant is flooded with freshwater, once drained it is pretty much operational. However, if it is seawater it takes about 6 months for the bacterial colonies to be fully re-established – that’s 6 months of poorly treated sewage being discharged.

Farmland can also be negatively impacted by coastal flooding.