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