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

Land, Larry F.; Moring, J. Bruce; Van Metre, Peter C.; Reutter, David C.; Mahler, Barbara J.; Shipp, Allison A.; Ulery, Randy L.

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.

Genre:

USGS Numbered Series

ProdID:

4462

Citation Author:

Land, Larry F.; Moring, J. Bruce; Van Metre, Peter C.; Reutter, David C.; Mahler, Barbara J.; Shipp, Allison A.; Ulery, Randy L.

Citation Contributing Office:

Citation Datum:

Citation Day:

Citation Edition:

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

ENGLISH

Citation Larger Work Title:

Citation LatN:

Citation LatS:

Citation LonE:

Citation LonW:

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

39 p. :col. ill., col maps ;28 cm.

Citation Projection:

Citation Public Comments:

Citation Publisher:

U.S. Dept. of the Interior, U.S. Geological Survey,

Citation Series:

Circular

Citation Series Code:

CIR

Citation Series Number:

1171

Citation Search Results Text:

Water quality in the Trinity River basin, Texas, 1992-95; 1999; CIR; 1171; Land, Larry F.; Moring, J. Bruce; Van Metre, Peter C.; Reutter, David C.; Mahler, Barbara J.; Shipp, Allison A.; Ulery, Randy L.