How Dams Hold Back Millions of Gallons of Water
Dams are one of the most impressive feats of civil engineering, holding…
Water scarcity
Water scarcity, insufficient freshwater resources to meet the human and environmental demands of a…
Lead poisoning
Lead poisoning, also called plumbism, deleterious effect of a gradual accumulation of lead in body tissues, as…
Reservoir
Reservoir, an open-air storage area (usually formed by masonry or earthwork) where…
Sewer
Sewer, conduit that carries wastewater from its source to a point of treatment and disposal. The…
Aqueduct
Aqueduct, (from Latin aqua + ducere, “to lead water”), conduit built to convey water. In a restricted sense,…
Water cycle
Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of…
Groundwater
Groundwater, water that occurs below the surface of Earth, where it occupies all or part…
Indus River
Indus River, Tibetan and Sanskrit Sindhu, Sindhi Sindhu, or Mehran, great trans-Himalayan river of South Asia. It is…




