swash line
geology
Quick Summary
A swash line, also known as a swash mark, is a geological feature found on beaches. It appears as a fine line or a tiny ridge of sandy debris. This mark is created by the swash, which is the rush of water up a beach after a wave breaks, at the farthest point it reaches before receding. The swash line is an indicator of the highest sea level reached during significant storms.12
Summary created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
2 Britannica Sources
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
