Introduction 2 Description of the storm Hydrologic effects of storm runoff on streamflow, reservoir contents, and water quality Double Mountain Fork Brazos River and Salt Fork Brazos River Clear Fork Brazos River and tributaries Main stem Brazos River and tributaries from South Bend to Whitney Dam Main stem Brazos River from Whitney Dam to mouth : Effects of flood on water quality in selected reservoirs Reservoir water quality (general considerations) Hubbard Creek Reservoir-Temperature Dissolved oxygen 37 Specific conductance, dissolved solids, dissolved chloride, dissolved sulfate, and hardness 37 Possum Kingdom Lake 40 Temperature-40 Di ssol ved oxygen 40 Specific conductance, dissolved solids, dissolved chloride, dissolved sulfate, and hardness 42 Lake Granbury 43 Temperature* 43 Dissol ved oxygen. 46 Specific conductance, dissolved solids, dissolved chloride, dissolved sulfate, and hardtiess 46 Lake Whitney-47 Temperature 47 Di ssol ved oxygen-49 Specific conductance, dissolved solids, dissolved chloride, dissolved sulfate, and hardness "-51 Summary and conclusions 52 References 57-m-14. Discharge hydrograph for Brazos River near Glen Rose, Texas (08091000), October 12-27, 1981 26 15. Reservoir-contents hydrograph for Lake Whiterry near Whitney, Texas (08092500), October 10-24, 1981 27 16. Graphs showing variations in mean daily discharge and dissolved-solids concentrations and loads for Brazos River near Highbank, Texas (08098290), Brazos River near College Station, Texas (08109500), and Brazos River near Richmond, Texas (08114000), October 1981 17. Map showing location of water-quality data-collection sites on Hubbard Creek Reservoir 18. Map showing location of water-quality data-collection sites on Possum Kingdom Lake 19. Map showing location of water-quality data-collection sites on Lake Granbury 20. Map showing location of water-quality data-collection sites on Lake Whitney 21. Graphs showing temperature, dissolved-oxygen, and specific-conductance profiles for Hubbard Creek Reservoir, August 4 and October 27, 1981 36 22. Graphs showing variations in volume-weighted-average concentrations of dissolved solids, dissolved chloride, dissolved sulfate, and hardness in Hubbard Creek Reservoir, 1978-81 39 23. Graphs showing temperature, dissolved-oxygen, and specific-conductance profiles for Possum Kingdom Lake, August 5-6 and October 28, 1981 £4. Graphs showing variations in volume-weighted-average concentrations of dissolved solids, dissolved chloride, dissolved sulfate, and hardness in Possum Kingdom Lake, 1978-81 25. Graphs showing temperature, dissolved-oxygen, and specific-conductance profiles for Lake Granbury, August 6-7 and October 29, 1981 26. Graphs showing variations in volume-weighted-average concentrations of dissolved solids, dissolved chloride, dissolved sulfate, and hardness in Lake Granbury, 1978-81 27. Graphs showing temperature, dissolved-oxygen, and specific-conductance profiles for Lake Whitney, August 12 and October 30, 1981 28. Graphs showing variations in volume-weighted-average concent...