An Indication Left by Receding Waters

This page is the CodyCross answer for the clue below from Home Sweet Home, Group 628, Puzzle 3 (Electrical Socket).

Question is: An Indication Left by Receding Waters

and the answer is: TIDEMARK

Word Meaning:

TIDEMARK — a line (of seaweed or differently coloured sand etc) on the shore showing the level of high or low tide

Definitions from Wiktionary.