Tide
"Periodic rise and fall of water in the seas or in large lakes due to the gravitational attraction of the moon and the sun." (United Nations Publications, 2013)
Sources
United Nations Publications. "Glossary of Shared Water Resources (English-Arabic): Technical, Socioeconomic and Legal Terminology." (2013). DOI:https://dx.doi.org/10.18356/70b462ce-en