Water-Quality Assessment of the Potomac River Basin:
Water-Quality and Selected Spatial Data, 1992-96


Streamwater data --

    Synoptic surveys of subunit streams


Site Location Map

Eighty-nine small streams within the Potomac River Basin were sampled once during the summer months from 1993 to 1995. Streams were selected to include smaller order streams with watersheds of 5 to 20 square miles, draining representative land uses of each subunit. Selection was non-random, using a geographical information system (GIS), followed by a field reconnaissance to locate accessible streams. The number of streams sampled in each land use is roughly proportional to the amount of that land use present within the subunit. Streamwater was analyzed for suspended sediment, major inorganics, nutrients, gross organics, and pesticides. Stream habitat was characterized.

Twenty-seven streams were sampled in the Great Valley Carbonate subunit in 1993 and 1994. Twenty-five streams in the Piedmont subunit, and twelve streams in the Triassic Lowlands subunit were sampled in 1994. Twenty-five streams in the Valley and Ridge subunit were sampled in 1995.

*For browsers without table capabilities, use download data only.*

Great Valley Carbonate

  • Field measurements
  • view data download data
  • Suspended sediment
  • view data download data
  • Major inorganic
  • view data download data
  • Nutrient and gross organic
  • view data download data
  • Pesticide
  • view data download data
  • Habitat measurements
  • description of data download stream reach data
    download geomorphic channel data
    download transect data
    download transect-point data

    Piedmont

  • Field measurements
  • view data download data
  • Suspended sediment
  • view data download data
  • Major inorganic
  • view data download data
  • Nutrient and gross organic
  • view data download data
  • Pesticide
  • view data download data
  • Habitat measurements
  • description data download stream reach data
    download geomorphic channel data
    download transect data
    download transect-point data

    Triassic Lowlands

  • Field measurements
  • view data download data
  • Suspended sediment
  • view data download data
  • Major inorganic
  • view data download data
  • Nutrient and gross organic
  • view data download data
  • Pesticide
  • view data download data
  • Habitat measurements
  • description data download stream reach data
    download geomorphic channel data
    download transect data
    download transect-point data

    Valley and Ridge

  • Field measurements
  • view data download data
  • Suspended sediment
  • view data download data
  • Major inorganic
  • view data download data
  • Nutrient and gross organic
  • view data download data
  • Pesticide
  • view data download data
  • Habitat measurements
  • description of data download stream reach data
    download geomorphic channel data
    download transect data
    download transect-point data

    * Viewing data displays selected analytes only. The download data contains all analytes for which samples were analyzed.


    Download entire Great Valley Carbonate water-quality data set
    Download entire Piedmont water-quality data set
    Download entire Triassic Lowlands water-quality data set
    Download entire Valley and Ridge water-quality data set
    Download entire stream reach data set
    Download entire geomorphic channel data set
    Download entire transect data set
    Download entire transect-point data set

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    Last modified: Thu Nov 13 15:41:31 1997