Somehow history of human begins with water. Ancient civilizations developed near water resources like springs, lakes and rivers, which were sources of clean water on that time. All of us heard about great civilizations on the bank of Mesopotamia, Nile rive and Indus river.
Water has a huge impact on human history and having clean and safe water always has been a big concern and will be. In arid areas people knows the value of water and they did very interesting works to bring water to their home. They dig water wells and Qanats and much of the population in that areas depended directly to this water. One of the oldest and largest known Qanat is in Iran and still after 2,700 years providing drinking and agricultural water to nearly 40,000 people. Also there is a two story Qanat in Ardestan which is constructed 800 years ago and has 60 l/s flow.
Besides drinking water and using it for cleaning and aggregation, human tried to use water for other purposes. To providing energy like watermills, to having cool flow in windcatchers, for measuring time and ....
In the pictures below you can see water clock and the clay tablet for water clock calculations from Babylon period.
Beside of these, there is a great history on dams and how human tried to reserve water for his future.
Blow is the picture of the Saad El Kafara dam which is built by ancient Egyptians around 2650 BC.
I will try to have a post about dams later.
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