Ouillon

An ouillon is a term used in the field of civil engineering and construction, specifically in reference to a ridge or embankment of earth, often artificially created. It can also refer to a low hill or a gently sloping mound. The purpose of an ouillon can vary, including:

• Water Management: To direct or divert water flow, preventing erosion or flooding. It might be used to create a temporary dam or channel.
• Landscaping: To create visual interest or provide a base for planting.
• Construction: To provide support or stability for structures, or to act as a platform for building materials.
• Agriculture: To create raised beds for planting, improving drainage and soil temperature.

The size and composition of an ouillon depend on its intended function and the available materials. It may be constructed from soil, gravel, or other readily available materials. The term is most frequently encountered in older texts and may be less common in modern engineering terminology, having been replaced by more specific terms depending on the application, such as "berm," "dyke," or "terrace." While the meaning of the word is relatively consistent, regional variations in usage and specific construction techniques may exist.