Development and Research:
Tracer Tests
CLICK PHOTOS FOR AN ENLARGED VERSION
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Multilevel well sampling array with over 10,000 subsurface sampling ports at the Cape Cod Site, MA. Several large-scale natural-gradient tracer tests and numerous small-scale tracer tests have been conducted with the array
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Tracer test being conducted to study subsurface contaminant transport at the Bemidji Site, MN
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USGS scientists processing water samples during a stream tracer test on California Gulch, Upper Animas River Watershed, CO
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Locating inflows and springs discharging into Mineral Creek, CO, prior to conducting a tracer test. Tracer tests are used to assess the relative magnitude of metal loading from inflows along a stream reach
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A site of continuous water-quality sampling during a tracer test conducted on the North Fork of the Animas River, CO
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View of a data logger used to control a pump that injects a tracer solution into a stream during a stream tracer test
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USGS equipment trailer -- bringing tracer tests to Rocky Mountain streams
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Spacing sampling points along a stream prior to a tracer test on Mineral Creek, CO
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Filling a holding tank with a tracer solution prior to the start of a stream tracer study, Upper Animas River Watershed, CO
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View of the setup of a NaCl tracer test that was designed to determine natural attenuation of metals in Pinal Creek, AZ
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Downstream view of Pinal Creek, AZ, where a tracer solution was injected into the stream during a tracer test. Water-quality sampling crews can be seen in the distance
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U.S. Department of the Interior |
U.S. Geological Survey
