Freshwater lakes and reservoirs are basins filled with freshwater. Only 2.53% of the global water is freshwater; 1.76% of the global water is stored in ice caps, glaciers, and permafrost, while all fresh groundwater makes up 0.76% of the global water. It leaves 0.01% only for the surface freshwater, of which 70% or 0.007% of the global water is stored in the freshwater lakes. As surface water is easily accessible water, the storage of water in lakes and reservoirs becomes very important for the water supply and represents a large proportion of the world's readily accessible water (see Figures 1 and 2). Lake water is not only used for human consumption. Other water uses include industrial applications and processes and transportation and generation of hydropower.
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