Levee (Dike)

A long, low embankment usually built along a watercourse to protect land from flooding. If built of concrete or masonry the structure is usually referred to as a floodwall. The term "dike" is commonly used to describe embankments that block an area on a reservoir rim that are lower than the top of the main dam. See also, "Secondary Embankment".

A long, narrow embankment usually built to protect land from flooding. If built of concrete or masonry the structure is usually referred to as a flood wall. Levees and floodwalls confine streamflow within a specified area to prevent flooding. The term "dike" is used to describe an embankment that blocks an area on a reservoir or lake rim that is lower than the top of the dam.