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Chapter A7. Section 7.0. Five-Day Biochemical Oxygen Demand

January 1, 2003

The presence of a sufficient concentration of dissolved oxygen is critical to maintaining the aquatic life and aesthetic quality of streams and lakes. Determinng how organic matter affects the concentration of dissolved oxygen (DO) in a stream or lake is integral to water-quality management. The decay of organic matter in water is measured as biochemical or chemical oxygen demand. This report describes the field protocols used by U.S. Geological Survey (USGS) personnel to determine the five-day test for biochemical oxygen demand. Each chapter of the National Field Manual is published separately and revised periodically. Newly published and revised chapters will be announced on the USGS Home Page on the World Wide Web under 'New Publications of the U.S. Geological Survey.'

Publication Year 2003
Title Chapter A7. Section 7.0. Five-Day Biochemical Oxygen Demand
DOI 10.3133/twri09A7.0
Authors Gregory C. Delzer, Stuart W. McKenzie
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Techniques of Water-Resources Investigations
Series Number 09-A7.0
Index ID twri09A7.0
Record Source USGS Publications Warehouse
USGS Organization U.S. Geological Survey