Crest Width
Water
The width or thickness of a dam at the level of the crest of the dam. In general, the term "thickness" is used for gravity and arch dams and "width" is used for other dams.
- — Dam Safety - Glossary of Terms retrieved 2014-06-01
Weather
In hydrologic terms, the thickness or width of a dam at the level of the crest (top) of the dam. The term "thickness" is used for gravity and arch dams and "width" for other types of dams.