A schematic cross section figure of the river levees.
I did not put text in this schema to ease translation to other wikis.

Design High Water Level (HWL)
Low water channel
Flood channel
Riverside Slope
Riverside Banquette
Levee Crown
Landside Slope
Landside Banquette
Berm
Low water revetment
Riverside land
Levee
Protected lowland
River zone
http://commons.wikimedia.org/wiki/File:River_Levee_Cross_Section_Figure.png
User:たまなるたみ