This information describes how human activities affect ground water and ground water recharge. After a discussion of point and nonpoint sources of contaminants, there is information about the effects of irrigation development, surface-water reservoirs, and removal of flood-plain vegetation on the interaction of ground water and surface water. The site also covers the effects of nitrogen use, pesticide application to agricultural lands, and atmospheric deposition on the quality of ground and surface water. All of the above are supported by illustrations. In addition, there is information about urban and industrial pollution, modification of river valleys including the construction of levees and reservoirs, and modification of the atmosphere, which includes atmospheric deposition and global warming.
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Subject: Environmental Science:Water Quality and Quantity:Groundwater , Surface Water , Point Source Pollution, Environmental Science:Land Use and Planning:Large-Scale Development, Environmental Science:Ecosystems:Habitats, Environmental Science:Global Change and Climate:Climate Change:Impacts of climate change, Geoscience:Hydrology, Environmental Science:Water Quality and Quantity:Non-Point Source Pollution, Geoscience:Hydrology:Ground Water:Water cycle/groundwater-surface water interface, Geoscience:Atmospheric Science:Climate Change:Impacts of climate change, Geoscience:Atmospheric Science:Climate Change Resource Type: Scientific Resources:Overview/Reference Work Grade Level: Middle (6-8), High School (9-12), College Lower (13-14) Topics: Human Dimensions/Resources, Hydrosphere/Cryosphere:Groundwater:Water cycle/groundwater-surface water interface, Hydrosphere/Cryosphere Theme: Teach the Earth:Teaching Topics:Water, Teach the Earth:Incorporating Societal Issues:Climate Change, Teach the Earth:Course Topics:Hydrology/Hydrogeology, Atmospheric Science, Environmental Science