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Water Quality and Bed-sediment Quality from Mountain Creek Lake and two stream sites near Grand Prairie, Texas, 2019 Mountain Creek Lake is a reservoir in north Texas 8 miles southwest of Dallas, Texas where historical contamination by polychlorinated biphenyl compounds (PCBs) and other organic contaminants has been reported. There was a need to reassess concentrations of contaminates of organic and inorganic compounds in the reservoir. In cooperation with the City of Dallas, the U.S. Geological Survey (USGS) sampled Mountain Creek Lake and two downstream stream sites over two sampling events. The study area consisted of seven sites on Mountain Creek Lake, one site on the Trinity River, and one site on Mountain Creek. Water-column and bed-sediment samples were collected at each site in June and August of 2019. Water-quality field... Categories: Data; Tags: City of Dallas, Dallas, Grand Prairie, Mountain Creek, Mountain Creek, All tags... Mountain Creek Lake, Mountain Creek Lake, PAH, PCB, Trinity River, Trinity River, USGS Science Data Catalog (SDC), VOC, Water Quality, bed-sediment quality, biota, environment, major/trace elements, nutrients, water quality, Fewer tags Biological and physical data for zebra mussel (Dreissena polymorpha) veligers collected from a coupled lake-stream ecosystem in north Texas, 2012-2014 Dispersal, establishment, and spread of aquatic invasive species such as the zebra mussel (Dreissena polymorpha) can be influenced by riverine velocities and volumetric flows in invaded lake-stream ecosystems. Zebra mussels, which have a planktonic larval form (veliger), disperse rapidly downstream from a source population. Concentrations, dispersal, and body conditions of zebra mussel veligers were studied under different volumetric flow, or discharge, conditions in a coupled lake-stream ecosystem in northern Texas, USA. Veliger densities in lotic environments were strongly related to population dynamics in upstream lentic source populations. A strong exponential decrease in veliger density was observed through... Categories: Data; Tags: Aquatic Biology, Aquatic ecosystem, Dallas, Dispersal, Ecology, All tags... Elm Fork Trinity River, Fort Worth, Geographical distribution, Lake Lewisville, Lake Texoma, Larvae, Oklahoma, Planktonic, Population dynamics, Ray Roberts Lake, Red River, River discharge, Texas, Trinity River, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Wildlife Biology, Fewer tags