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A new look at Grand Canyon springs and possible threats from uranium mining

The Colorado River carries snowmelt from the Rocky Mountains that mixes with Indigenous springs and groundwaters of the Colorado Plateau. This can be seen at the confluence of the spring-fed Little Colorado River (coming in from the right) and the main Colorado River (flowing from top to bottom. The mixing of different waters evident in surface waters also occurs in groundwater, where it can be studied using the chemistry of different springs and wells. (Photo by Davesh Shingari)

The Colorado River carries snowmelt from the Rocky Mountains that mixes with Indigenous springs and groundwaters of the Colorado Plateau. This can be seen at the confluence of the spring-fed Little Colorado River (coming in from the right) and the main Colorado River (flowing from top to bottom. The mixing of different waters evident in surface waters also occurs in groundwater, where it can be studied using the chemistry of different springs and wells. (Photo by Davesh Shingari)

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