because they need to built it to live in it
The sumerians used dikes and ditches.
The Sumerians were the first to build an irrigation system. They learned how to use the floodings of the rivers to water their plants. They dug canals in which they could store the water and made gates (dikes) to protect their lands from flooding. When the river went back to its banks, the gates were closed and a lot of water remained in the canals. Without this knowkledge (and hard work) they just wouldn't have been able to live and farm in the very hot weather.
The Sumerians controlled their physical environment by practicing irrigation. They also domesticated animals and built houses out of mud bricks.
Mesopotamia is the land between the Tigris and Euphrates Rivers. Sumerians learned to control the Tigris and Euphrates Rivers by constructing levees and irrigation canals.
It put them closer to the stars, from which they believed we came.
Dikes are built by engineers and construction workers to prevent flooding by controlling the flow of water in rivers, lakes, and coastal areas. The construction of dikes requires careful planning, engineering expertise, and maintenance to ensure they remain stable and effective in protecting against flooding.
The sumerians used dikes and ditches.
The Netherlands (The Dutch built the dikes):-)
Because dikes are built at the edge of the ricefields to stop the water from carrying the soft soil away
They wanted a more permanent food source, animals that they hunted weren't infinite ya know, so they decided on something permanent, like veggies
Dikes, mills and many villages are built on terps.
Levees, dikes.
Ziggurat
Sumerians
The Sumerians
Friesen- People who built dikes and dams in Friesland =) Hope this helps :)
..... stop floods, just like the levees on the Mississippi.