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Data

Find current and historical data for streamflow, groundwater, water quality, and other topics. You can also access our data releases from USGS ScienceBase and other repositories.

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Microplastics in 29 Great Lakes tributaries (2014-15)

This dataset describes the quantity and morphology of floating microplastics in 29 Great Lakes tributaries in 6 states. Samples were collected in spring 2014 spring 2015. Each tributary was sampled three to four times, capturing low-flow and runoff-event conditions. Sampling and analysis methods are described in the .xml metadata file. These data are interpreted in a journal article (pending).