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 |