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Differences in Phosphorus and Nitrogen Delivery to the Gulf of Mexico from the Mississippi River Basin

by Richard B. Alexander, Richard A. Smith, Gregory E. Schwarz, Elizabeth W. Boyer, Jacqueline V. Nolan, and John W. Brakebill

Article and supplemental material in Environmental Science and Technology

Press Release


Maps and graphics

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For additional information on the study, please contact:

Richard Alexander
U.S. Geological Survey
12201 Sunrise Valley Drive, MS 413
Reston, Virginia 20192
Phone: (703)648-6869

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