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Limnology data from Lake Powell, desert southwest USA (ver. 2.0, Sept. 2023)

Metadata Updated: July 6, 2024

These data were compiled as part of a long-term (1964 - 2022) water quality monitoring program at Lake Powell. Objectives of our study were to release a consistent record of long-term water quality data. The 58-year limnology dataset captures some water quality parameters (temperature, salinity, major ions, total suspended solids) from reservoir filling to present day. It also contains a 38-year record of secchi depth, and a ~30-year record of nutrients, phytoplankton, and zooplankton assemblages. The data were collected from various sites within the Lake Powell reservoir and the Glen Canyon dam. Regular monthly sampling occurred at three sites near the dam and reservoir-wide sampling was generally conducted quarterly, or least annually, at anywhere from 8 to 37 sites. Secchi depth data is taken by field observation, profile information is taken on site with a sonde or CTD, and chemistry (major ion and nutrients), phytoplankton and zooplankton data are collected via preserved water sample, that is sent to laboratories for analysis. More detailed descriptions of the monitoring program and sampling methodology can be found in two prior U.S. Geological Survey data series reports (Vernieu 2015). These data span the introduction of an invasive bivalve (Dreissena bugensis). The dataset can be used to explore long-term trends in water quality at Lake Powell reservoir as well as to inform regional, continental, and global limnology studies.

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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Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Identifier USGS:62b39805d34e8f4977cb788c
Data Last Modified 20230907
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 546a905d-8cd3-4b04-8fdc-69878da1ca88
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -111.584485,36.865241,-109.9127,38.1697
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash aa185596ae0497de4d1ffa598d399c10e443fa0040b8d2dac9bd360d54fc838f
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -111.584485, 36.865241, -111.584485, 38.1697, -109.9127, 38.1697, -109.9127, 36.865241, -111.584485, 36.865241}

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