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    • Cyanobacteria, Cyanotoxin, Cyanotoxin Synthetase Gene, and other Water-Quality Data Collected from Five River Basins in the North Atlantic Appalachian Region, August through September, 2020

    Metadata Updated: January 21, 2026

    This data release contains cyanotoxin, chlorophyll-a, and pheophytin-a concentration, cyanobacterial genetics, phytoplankton community composition, and multiparameter sonde data collected from 20 sites in five northeastern United States river basins (Penobscot (ME), Santuit (MA), York (VA-WV), Salem (NJ), and Peconic (NY)). Solid Phase Adsorption Toxin Tracking (SPATT) passive samplers were deployed at all sites between August 31 and September 2, 2020, and retrieved after 7 days. Discrete water samples were collected when SPATTs were deployed, and at 2 sites (USGS station IDs 01670257, 0167014792), samples were also collected when the SPATTs were recovered. Sonde data were collected when deploying and retrieving the SPATTs. The SPATT samples were extracted and analyzed for cyanotoxins (anatoxin-a, cylindrospermopsin, microcystin, saxitoxin) by enzyme-linked immunosorbent assay (ELISA) and liquid chromatography tandem mass spectrometry (LC/MS/MS). Sonde data included measurements of water temperature, pH, specific conductance, dissolved oxygen, turbidity, chlorophyll, phycocyanin, and phycoerythrin fluorescence (in relative fluorescence units and micrograms per liter), and nitrate, however some sensors were not available at all locations. Discrete samples were analyzed for total cyanotoxin concentration (anatoxin-a, cylindrospermopsin, microcystin, saxitoxin) by ELISA and LC/MS/MS, chlorophyll-a, pheophytin-a, cyanotoxin synthetase genes, and phytoplankton community composition. Saxitoxin could not being analyzed by LC/MS/MS so an additional ELISA analysis was performed instead.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date January 11, 2026
    Metadata Updated Date January 21, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 11, 2026
    Metadata Updated Date January 21, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_6464e4d3d34ec179a83da4aa
    Data Last Modified 2024-04-29T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Datagov Dedupe Retained 20260121130127
    Harvest Object Id e358661f-24f6-49b6-9a93-797eb30b862e
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -83.1885, 36.5979, -83.1885, 47.3388, -66.9727, 47.3388, -66.9727, 36.5979, -83.1885, 36.5979}
    Source Datajson Identifier True
    Source Hash f5f861dbb215b54a48d081bf804221a4fdad6762b56fbdfa2c3a5ac2cb43c783
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -83.1885, 36.5979, -83.1885, 47.3388, -66.9727, 47.3388, -66.9727, 36.5979, -83.1885, 36.5979}

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