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Wetlands and groundwater
Wetlands, which provide a summer home to nearly all of North America's 45 million ducks and other waterfowl, often have very close connections with the groundwater system. Some wetlands, e.g., potholes in higher ground, may serve as important groundwater recharge areas. Others, especially those in low-lying areas, may be the receptors for significant amounts of groundwater discharge. Therefore, if the underlying groundwater is contaminated, detrimental consequences will be felt by the wildlife and all other resources dependent on that wetland.
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