man-made lake

A man-made lake, also known as a reservoir, is an artificial body of water created by building a dam across a river or by constructing an impoundment. These reservoirs are crucial components of water supply systems, used for flood control, irrigation, and hydroelectric power generation.1

Natural lakes form through various geological processes like tectonic activity, glaciation, or volcanism. Over time, lakes naturally age and become enriched with nutrients, a process called eutrophication, which can lead to decreased water quality and biological production. Human activities, such as wastewater discharge and agricultural runoff, can significantly accelerate eutrophication.234

Reservoirs can experience rapid changes in water levels due to their use for water supply or power generation, and water is often drawn from deeper levels, resulting in a shorter residence time compared to natural lakes. Sedimentation is a common problem in reservoirs, reducing their storage capacity and lifespan. Additionally, water loss can occur through evaporation and seepage.21