Dykes
It is called a Levee, some places it is called a Dike.
wet
A small area of land is called: A fobe.
rock bottom
aquifers
It is called a "levee". A synonym (from the Netherlands) is "dike".
these are wrong
levee
dikes, levees
It is called a Levee, some places it is called a Dike.
The raised earthwork areas were called berms.
Hill
in Europe they are called dykes
Relatively flat, raised areas of land called plateaus.
The depressions left behind are called kettles. The raised areas are called moraines.
rice
to improve life for the people in rural and urban areas