Water quality in the Trinity River basin, Texas, 1992-95

Circular 1171
By: , and 



Water quality in the Trinity River basin was studied during 1992-95 as part of the USGS National Water-Quality Assessment (NAWQA) Program. Studies included chemical sampling of streams, streambed sediments, biota, and ground water; measuring distributions of biological communities in streams; and measuring physical characteristics of streams that affect biological habitat. The sampling design, in general, relates water-quality conditions to causative human and natural environmental factors. The occurrence of pesticides, for example, is related to land use. Trends are mixed, with a substantial improvement in the diversity of fish species downstream from Dallas and large decreases in regulated contaminants such as DDT; but increases in unregulated contaminants such as polychlorinated biphenyls.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Water quality in the Trinity River basin, Texas, 1992-95
Series title Circular
Series number 1171
ISBN 0607892331 (pbk.)
DOI 10.3133/cir1171
Year Published 1999
Language English
Publisher U.S. Geological Survey
Contributing office(s) Texas Water Science Center, Rocky Mountain Regional Office
Description 39 p.
Country United States
State Texas
Other Geospatial Trinity River basin
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details