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    • Monitoring Data for Willow Creek Lake, Nebraska, 2012–14—Microcystin

    Metadata Updated: January 20, 2026

    As a part of the statewide Public Beach Monitoring Program–Bacteria and Microcystin, the Lower Elkhorn Natural Resources District collected weekly samples at Willow Creek Lake to monitor microcystin concentrations. The monitoring generally followed the procedures described by Graham and others (2008) for recreational areas. Sampling occurred weekly during May through September, 2006 to 2014, though data provided in this Data Release are limited to 2012 to 2014. Grab samples were collected from the water surface by wading at the south-shore swimming beach. In the laboratory, the samples underwent three freeze-thaw cycles to lyse the cells prior to analysis using the enzyme-linked immunosorbent assay technique to measure total microcystin (MC) concentration (Metcalf and Codd, 2003).

    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.

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    Dates

    Metadata Created Date January 13, 2026
    Metadata Updated Date January 20, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 13, 2026
    Metadata Updated Date January 20, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_5af4477ce4b0da30c1b44822
    Data Last Modified 2020-08-24T00:00:00Z
    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 20260120063953
    Harvest Object Id d4bb9951-85d2-41e0-b010-8be1c21db0b1
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": -97.608329999997, 42.16444, -97.608329999997, 42.186111, -97.552499999999, 42.186111, -97.552499999999, 42.16444, -97.608329999997, 42.16444}
    Source Datajson Identifier True
    Source Hash 2788e70e8360622cd0e6323fde7e1223b204ab33e9dca41d02e79a9017cc21e1
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -97.608329999997, 42.16444, -97.608329999997, 42.186111, -97.552499999999, 42.186111, -97.552499999999, 42.16444, -97.608329999997, 42.16444}

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