National Water-Quality Assessment (NAWQA) - Digital Map Products |
Overview maps (gif) of study unit boundaries: cycle 1 || cycle 2
Boundaries and codes for the areas studied during the first decade of the NAWQA program from 1991-2001 - nawqacyc1
Boundaries and codes for the areas to be studied during the second decade of the NAWQA program from 2001-2012 - nawqacyc2
Generalized boundaries and codes for the areas studied during the first decade of the NAWQA program from 1991-2001 - nawqagencyc1
Generalized boundaries and codes for the areas to be studied during the second decade of the NAWQA program from 2001-2012 - nawqagencyc2
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U.S. Department of the Interior, U.S. Geological Survey
Maintainer: Kerie Hitt (kjhitt@usgs.gov) Last update: 11:03:32 Thu 02 Jan 2003 Privacy Statement || Disclaimer || Accessibility URL: http://water.usgs.gov/nawqa/digmap.html |