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National Field Manual for the Collection of Water-Quality Data (TWRI Book 9)

Chapter A7. Biological Indicators

• Comments/Errata page
• This report is in pdf format. Download a copy of Adobe Reader for free.

Sections of Chapter A7:

Cover, contents, and introduction (90KB PDF)

7.0 Five-day biochemical oxygen demand

7.1 Fecal indicator bacteria, ver. 2.0, 2/2007

7.2 Fecal indicator viruses

7.3 Protozoan pathogens

7.4 Algal biomass indicators

7.5 Cyanobacteria in lakes and reservoirs: toxin and taste-and-odor sampling guidelines, ver. 1.0, 9/2008

Conversion factors, References, and Appendix (1.2MB PDF) [Note: References for sections 7.4 and 7.5 are included in those sections, not in this final section.]

Return to Field Manual Table of Contents

Citation Information

U.S. Geological Survey, variously dated, Biological indicators: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap. A7, accessed __list date__, from http://pubs.water.usgs.gov/twri9A/.

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Submit a question or comment related to this National Field Manual. For general water-quality questions, contact the USGS Office of Water Quality.

Chapter A7 Archives

• Cover pages (122KB PDF)

• Abstract/Introductory sections (60KB PDF), 3rd ed., dated 11/2003

• Section 7.1, ver. 1.2, dated 11/2004
• Section 7.1, ver. 1.1, dated 9/2004
• Section 7.1, dated 11/2003
• Chapter A7, 2nd edition, dated 3/03
• Chapter A7, includes updates through 9/99