thumbnail

Concentrations and annual fluxes for selected water-quality constituents from the USGS National Stream Quality Accounting Network (NASQAN) 1996-2000

Water-Resources Investigations Report 2001-4255

By:
, , ,

Links

Abstract

This report contains concentrations and annual mass fluxes (loadings) for a broad range of water-quality constituents measured during 1996-2000 as part of the U.S. Geological Survey National Stream Quality Accounting Network (NASQAN). During this period, NASQAN operated a network of 40-42 stations in four of the largest river basins of the USA: the Colorado, the Columbia, the Mississippi (including the Missouri and Ohio), and the Rio Grande. The report contains surface-water quality data, streamflow data, field measurements (e.g. water temperature and pH), sediment-chemistry data, and quality-assurance data; interpretive products include annual and average loads, regression parameters for models used to estimate loads, sub-basin yield maps, maps depicting percent detections for censored constituents, and diagrams depicting flow-weighted average concentrations. Where possible, a regression model relating concentration to discharge and season was used for flux estimation. The interpretive context provided by annual loads includes identifying source and sink areas for constituents and estimating the loadings to receiving waters, such as reservoirs or the ocean.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Concentrations and annual fluxes for selected water-quality constituents from the USGS National Stream Quality Accounting Network (NASQAN) 1996-2000
Series title:
Water-Resources Investigations Report
Series number:
2001-4255
Edition:
-
Year Published:
2001
Language:
ENGLISH
Contributing office(s):
National Stream Quality Accounting Network (NASQAN)
Description:
Unpaginated
Time Range Start:
1996-01-01T12:00:00
Time Range End:
2000-12-31T12:00:00
Online Only (Y/N):
Y