i don't know
ummmm how about Sand
Dams are in front of the flow, levees are at the sides.
Flooding
Flooding
Levees and dams are beneficial to farmlands because they provide the means of irrigation.
Man Made dams are constructed for several reasons. One may construct a dam to balance water height or achieve agricultural irrigation.
A dam holds back the water from a river. A levees is like a wall that helps to stop the ocean from washing over buildings.
Walls to keep out water are called dams and levees.
Dams, dykes, and levees are built to control the flow of water.
The Sumerians used levees, canals, and dams for controlling water. These are all different systems of irrigation. With levees, canals, and dams the Sumerians had a reliable water source. They had plenty of water for their crops. These systems of irrigation helped bring neighboring communities together. When there was a problem with the dam, canal, or levees, the people around would help each other out by taking care of their systems of irrigation
So when their dams and levees fail they have a plan B.
they created levees and dams but sometimes they had lots of water and sometimes they had to less. by Mary Ilsa
Levees prevent rivers from flooding their banks as often