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National Water-Quality Assessment (NAWQA) Study-Unit Investigations in the conterminous United States 1991-2001

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Abstract

This is a coverage of the boundaries and codes used for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program Study-Unit investigations in the conterminous United States, excluding the High Plains Regional Ground-Water Study. The data set represents the areas studied during the first decade of the NAWQA Program, from 1991-2001 ("cycle 1").

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Unnumbered Series
Title:
National Water-Quality Assessment (NAWQA) Study-Unit Investigations in the conterminous United States 1991-2001
Edition:
6.1
Year Published:
2006
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
Dataset
Country:
United States
Online Only (Y/N):
Y
Additional Online Files(Y/N):
N