Design of the National Water-Quality Assessment Program; occurrence and distribution of water-quality conditions
Circular
1112
By: Robert J. Gilliom, William M. Alley, and Martin E. Gurtz
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Abstract
The National Water-Quality Assessment Program assesses the status of and trends in the quality of the Nation's ground- and surface-water resources. The occurrence and distribution assessment component characterizes broad-scale water-quality conditions in relation to major contaminant sources and background conditions in each study area. The surface-water design focuses on streams. The ground-water design focuses on major aquifers, with emphasis on recently recharged ground water associated with human activities.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Design of the National Water-Quality Assessment Program; occurrence and distribution of water-quality conditions |
| Series title | Circular |
| Series number | 1112 |
| DOI | 10.3133/cir1112 |
| Edition | - |
| Year Published | 1995 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey ; U.S.G.S. Information Services [distributor], |
| Description | vi, 33 p. :ill. (chiefly col.), col. maps ;28 cm. |
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