W. Scott Gain 1990 <p>The U.S. Geological Survey (USGS), in cooperation with the city of Dallas, conducted a study of the time of travel of solutes during moderate flow conditions in a reach of the Trinity River from the outfall of the Dallas Central Wastewater Treatment Plant (DCWTP) to the USGS streamflow-gaging station 08062700, Trinity River at Trinidad, in May and August 1987. &nbsp;Previous USGS time-of-travel studies of this reach of the river (Ollman, 1973; 1975) provided low- and moderate-flow data. &nbsp;The data were included in the calibrartion of a mathematical water-quality model used by the city of Dallas and other public and private entities involved in water resources managemnt of the area. &nbsp;The purpose of this study was to provide additional data to extend calibration of that model to include moderately higher streamflow conditions.</p> application/pdf 10.3133/ofr89614 en U.S. Government Printing Office Time-of-travel of solutes in the Trinity River from Dallas to Trinidad, Texas, May and August 1987 reports