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U.S. GEOLOGICAL SURVEY
Data Series 345

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Summary

Data presented in this report are from the National Water Quality Assessment Program Nutrient Enrichment Effects Team study. Five study areas across the United States were sampled either in 2003 or 2004. Data collected included water quality (nutrients, carbon), biology (chlorophyll, benthic algal and invertebrate assemblages, limited fish assemblages), habitat, and ancillary data. Basic methods and references for more detailed sampling procedures also are presented to enhance the use of the data by the reader.

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