There are 13 dams built along the Yellow River. They are listed below with the year of completion.
Dams
The Aswan Dam was built in 1956 to control the Nile River floods and produce electricity. Before the dams were built, the Nile River flooded every year during late summer, when water flowed down the valley from its East African drainage basin.
The Aswan High Dam completed in 1970.
they needed a way to control the rivers flow
They controlled their floods by creating canals and lakes to help hold the water when a flood occured.
Probably because they invented and built the first irrigation system, which is how they turned their lands fertile. They learned how to control the floods of the rivers: they dug canals, built gates, and when the plants needed water, they opened the gates and the water flowed down the fields. The harvest was rich.
Dams are usually built were there are droughts or floods because damns can control the flow of water to prevent floods from happening and store water in case a drought affects a local town, village or city.
They built these walls called Chounts and that pretected the flooding but three times the Chount did not work
they are built for plumbing purposes
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.
[1] The Aswan Dam and the links below will give you details including the actual dates. [2] Who am I? See below at 'First answer by'
No, in fact, dams would collapse or crack in an event of an earthquake. Dams are built more to control floods, especially if they occur frequently and do destructive damage, just like why the Three Gorges Dam was built.
Levees are built along the banks of rivers