TITLE PAGE






Water Quality in the Trinity River Basin,
Texas, 1992--95

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


Coordination among agencies and organizations is an integral part of the NAWQA Program. We thank the following agencies and organizations who contributed through their participation in the Study Unit Liaison Committee.

Federal Agencies:

State Agencies:

Local Organizations:

Universities and other organizations:

Summary of compound detections and concentrations tables (p. 30--35) were provided by Sarah J. Ryker, Jonathon C. Scott, and Alan L. Haggland.

Editing, graphics, and report-processing support were provided by Gloria J. Smith, Stanley H. Crenwelge, Peter W. Bush, Gail J. Sladek, and Judy A. Voigt.


For additional information on the National Water-Quality Assessment (NAWQA) program:

Trinity River Basin Study Unit, contact:

District Chief
U.S. Geological Survey
Water Resources Division
8011 Cameron Rd.
Austin, TX 78754


or

Chief, NAWQA Program
U.S. Geological Survey
Water Resources Division
12201 Sunrise Valley Drive, M.S. 413
Reston, VA 20192

Information on the NAWQA Program is also available on the Internet via the World Wide Web. You may connect to the NAWQA Home Page using the Universal Resources Locator (URL): http://wwwrvares.er.usgs.gov/nawqa/nawqa_home.html

The Trinity River Basin Study Unit's Home Page is at URL: http://tx.usgs.gov/trin/index.html

Front cover: Dallas skyline at dusk. The channelized Trinity River is in foreground. (Photograph courtesy of TEXAS HIGHWAYS Magazine. \xa9 by Richard Stockton. Used with permission.)

Back cover: Longhorns grazing north of Denton. (Photograph by Larry F. Land, U.S. Geological Survey.)


U.S. DEPARTMENT OF THE INTERIOR
BRUCE BABBITT, Secretary


U.S. GEOLOGICAL SURVEY
Thomas J. Casadevall, Acting Director



The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Government.

1998



Free on application to the
U.S. Geological Survey
Information Services
Box 25286 Federal Center
Denver, CO 80225


Library of Congress Cataloging in Publications Data

Water quality in the Trinity River Basin, Texas, 1992--95 / by Larry F. Land ... [et al.].
p. cm.--- (U.S. Geological Survey circular ; 1171)
ISBN 0--607--89233--1 (pbk.)
1. Water quality---Texas---Trinity River watershed. I. Land, Larry F.
II. Series.
TD224.T4W378 1998
363.739'42'0976414---dc21 98--4639
98-4639
CIP