USGS

A NATIONAL LOOK AT NITRATE CONTAMINATION OF GROUND WATER

By Bernard T. Nolan, Barbara C. Ruddy, Kerie J. Hitt, and Dennis R. Helsel

Figure 1. Areas in the United States with the highest risk of nitrate contamination of shallow ground water (shown in red on the map) generally have high nitrogen input, well-drained soils, and less extensive woodland relative to cropland.

Figure 1

|Back to main report| |NAWQA|
U.S. Department of the Interior, U.S. Geological Survey
Maintainer: Kerie Hitt (kjhitt@usgs.gov)
Last update: 17:47:56 Mon 09 Jul 2001
Privacy Statement || Disclaimer || Accessibility
URL: http://water.usgs.gov/nawqa/wcp/wcpfig1.html 		FirstGov, 'Your First Click to the U. S. Government'