Weather also has an impact on the coastline. Rainwater can cause surface erosion and frost (in cold climates) can cause rock to shatter. Strong winds can also contribute to the erosion of cliffs.

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river.

By 2050, sea levels along the United States coast are expected to rise by 0.25 to 0.30 meters, increasing flooding in ...