Water quality and streamflow data for the West Fork Trinity River in Forth Worth, Texas

摘要: Water-quality and streamflow data were collected on the West Fork Trinity River in Fort Worth, Texas November 10 to 14, 1980, test a Lagrangian water-quality model. The described conditions of steady flow but time varying conditions. Measured constituents included DO (dissolved oxygen), water temperature, pH, specific conductance, BOD (biochemical oxygen demand) following dissolved chemicals: kjeldalh nitrogen, ammonia, nitrite, nitrate, orthophosphate, phosphorus, total carbon inorganic carbon. Data define initial conditions, boundary stream that can be compared model predictions for subsequent modeling study. defined at beginning loads entering 13.4-mile segment from headwaters three tributaries. Trends measured two ways. Sampling every 2 4 hours four sites gave diel fluctuations. To avoid advective uncertainties, also with sampling program involved tracking dye through selected reaches as peak passed points. Several factors seemed affect quality. In addition fluctuations pH indicated importance photosynthesis some reaches, deoxygenation nitrification important. samples showed decline ammonia distance downstream polluted rate constant was approximately 0.1 0.2 per day (base e) carbonaceous varied 3 11 milligrams liter. first order bottles tests 0.8 concentrations ranged 0.11 2.6 nitrogen Reaeration coefficients essentially zero pooled much 3.6 20 degrees Celsius riffledominated reaches. Overall into well by data. Background head study reach came mixture distributed urban rural sources upstream reach. One tributary consist untreated sewage. A second conveyed treated sewage stream. minor drained an area.