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Biological data for water in Lake Powell and from Glen Canyon Dam releases, Utah and Arizona, 1990–2009

Data Series 959
Prepared in cooperation with Bureau of Reclamation
By:
https://doi.org/10.3133/ds959

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Abstract

Biological samples from various locations on Lake Powell and in the Colorado River in the tail water downstream of Glen Canyon Dam were collected by the Bureau of Reclamation and U.S. Geological Survey from December 1990 through December 2009 as part of a long-term water-quality monitoring program that began in 1964. These samples consisted of discrete (1-m deep) chlorophyll samples, discrete (1-m deep) wholewater phytoplankton samples, and 30-m vertically composited zooplankton samples filtered through an 80-µm plankton net. Chlorophyll concentration was determined by acetone extraction followed by trichromatic spectroscopy on 2,051 samples. Phytoplankton analysis consisted of identification to the genus or species level, enumeration, and estimation of biovolume on 1,397 samples. Phytoplankton analysis identified 646 different phytoplankton taxa. Zooplankton analysis consisted of identification to the genus or species level, enumeration, and estimation of biomass from 1,898 samples. Zooplankton analysis identified 114 different zooplankton taxa.

The results of these analyses are presented in this report. From this record, further interpretation may be made concerning primary and secondary production in Lake Powell. These data provide a linkage between physical and chemical water-quality data and fisheries investigations in Lake Powell. They also provide information regarding the export of biological material from Glen Canyon Dam.

Suggested Citation

Vernieu, W.S., 2015, Biological data for water in Lake Powell and from Glen Canyon Dam releases, Utah and Arizona, 1990–2009: U.S. Geological Survey Data Series 959, 12 p., http://dx.doi.org/10.3133/ds959.

ISSN: 2327-638X (online)

Study Area

Table of Contents

  • Abstract
  • Introduction
  • Previous Studies
  • Physical and Geographic Setting
  • Goals and Objectives of Biological Monitoring Program
  • Methods
  • Results and Data Management
  • References Cited
  • Appendix 1. Database Table Descriptions
Publication type Report
Publication Subtype USGS Numbered Series
Title Biological data for water in Lake Powell and from Glen Canyon Dam releases, Utah and Arizona, 1990–2009
Series title Data Series
Series number 959
DOI 10.3133/ds959
Year Published 2015
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Southwest Biological Science Center
Description v, 12 p.
Time Range Start 1990-12-01
Time Range End 2009-12-31
Country United States
State Utah, Arizona
Other Geospatial Lake Powell, Colorado River, Glen Canyon Dam
Online Only (Y/N) Y
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details