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Tagged: USGS

  • A new carbon model indicates that in larger U.S. rivers, such as the Mississippi River, photosynthesis by algae is the one of most significant sources of organic carbon.
    • — March 11, 2011

    USGS study develops new surface water carbon model

    As part of a U.S. Geological Survey-led study, researchers have devised a new carbon model to help assess the nation’s surface water interactions with the carbon cycle. U.S. streams, according[…]

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    Figure 1: The Great Lakes in the U.S. and Canada are well-known examples of lakes produced by multiple glaciations and deepened by glacial scouring.
    • — February 9, 2011

    Findings released from five-year USGS study on water availability in the Great Lakes Basin

    A five-year U.S. Geological Survey pilot study of water availability and use in the Great Lakes Basin recently concluded. According to the agency, the pilot project was part of a[…]

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  • White Bear Lake
    • — February 4, 2011

    Proposed study would investigate record-low water level of White Bear Lake

    Minnesota’s White Bear Lake has been achieving record-low water levels for the past several years, but researchers aren’t yet sure why. A proposed federal study would aim to further understand[…]

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    • — December 28, 2010

    Coal-tar sealant is leading source of PAHs in urban lakes, according to USGS

    Coal-tar based pavement sealant is the leading source of polycyclic aromatic hydrocarbons (PAHs) in 40 urban lakes spanning the nation, according to research from the U.S. Geological Survey published this[…]

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