To ensure an ongoing water source, communities construct dams, which in turn create electricity.
A dam is a man-made lake used to store water. The majority of reservoirs are created by building dams across rivers. A natural lake whose outflow has been dammed to regulate the water level can likewise be converted into a reservoir. The dam regulates how much water drains from the reservoir. Service reservoirs don't rely on damming a river or lake; they are wholly man-made. Clean water is kept in these reservoirs, which are also known as cisterns. Cisterns can be built in water towers or drilled into underground caverns.
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