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Design of the National Water-Quality Assessment Program; occurrence and distribution of water-quality conditions

Circular 1112

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, ,

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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.

Additional Publication Details

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
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.