NAWQA Circular 1136

National Water-Quality Assessment Program

Nutrients in the Nation's Waters--Too Much of a Good Thing?

U.S. Geological Survey Circular 1136

This report is based on analyses in U.S. Geological Survey Water-Resources Investigations (WRI) Report 95-4031 (Mueller, D.K., Hamilton, P.A., Helsel, D.R., Hitt, K.J., and Ruddy, B.C., 1995, Nutrients in ground water and surface water of the United States--An analysis of data through 1992, 74 p.).

For copies of WRI Report 95-4031 and additional information on National Water-Quality Assessment (NAWQA) Program studies, contact:

Chief, NAWQA Program
U.S. Geological Survey
Water Resources Division
12201 Sunrise Valley Drive, M.S. 413
Reston, VA 20192
email: nawqa_whq@usgs.gov --mailbox--

For information on U.S. Geological Survey research dealing with nutrients and water quality, contact:

Chief, Office of Hydrologic Research
U.S. Geological Survey
Water Resources Division
12201 Sunrise Valley Drive, M.S. 436
Reston, VA 20192

Information regarding the NAWQA Program is also available on the Internet via the World Wide Web. You can connect to the NAWQA Home Page for online information, and you can obtain the data sets analyzed to produce the information in this report.

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U.S. Department of the Interior, U.S. Geological Survey
Maintainer: Kerie Hitt (kjhitt@usgs.gov)
Last update: 11:28:34 Wed 26 Dec 2007
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URL: http://water.usgs.gov/nawqa/circ-1136/h11.html