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Study examines factors influencing amount of carbon in large US rivers

The movement of carbon in the Colorado and Missouri Rivers follows different patterns but is governed by a combination of natural factors and human activities.
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Aquifer recharge reduced nitrate levels in groundwater, USGS study shows

According to results from a new study carried out by the U.S. Geological Survey and the Hi-Desert Water District, artificial replenishment of groundwater aquifer systems can lead to a drop in nitrate concentrations in groundwater and a rise in water levels.
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