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These data were collected from the TOPGUN-SODA10 2AK core collected in 2010 by LacCore (University of Minnesota), the USGS. and the University of California (U.C.) Berkeley. The 8.9 meter length core had stable isotopes of oxygen and carbon sampled every 10 millimeters or so, and diatoms samples at every 50 millimeters to 200 millimeters depending on the depth in the core. mineralogic data were collected using X-ray diffraction and grain-size analysis were done at various depths. These data are used to interpret the Holocene and late Pleistocene hydrology and paleoclimate of the lake and the region. The interpretation can be found in: Rosen, M.R., Reidy, L., Starratt, S., Zimmerman, S., in review, Middle Holocene...
Categories: Data;
Tags: Aquatic Biology,
Big Soda Lake,
Central Nevada Desert Basins,
Climatology,
Diatoms, All tags...
Geochemistry,
Grain-size analysis,
Hydrology,
Lake coring,
Limnology,
Nevada,
Piston and gravity coring,
Sedimentology,
Soda Lake East,
Stratigraphy,
USGS Science Data Catalog (SDC),
Water Quality,
X-Ray Diffraction,
biota,
carbonate isotopes,
elevation,
environment, Fewer tags
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Due to declining water levels and increasing salinity in the Salton Sea which may increase the hazards to wildlife, the U.S. Geological Survey and U.S. Bureau of Reclamation are re-evaluating selenium concentrations in the region. As part of this work, selenium concentrations in water and sediment samples and selected other inorganic constituents were compiled from published reports, public databases, and unpublished archives into a tabulated spreadsheet. This spreadsheet represents a rapid synthesis of available data on selenium concentrations in water and sediment in the region surrounding the Salton Sea, however it does not include all data ever published in the region. Additionally, the data compilation was...
Categories: Data;
Tags: California,
Salton Sea,
Soil Sciences,
USGS Science Data Catalog (SDC),
Water Quality, All tags...
chemical analysis,
environment,
geoscientificInformation,
groundwater quality,
selenium,
surface water quality,
unconsolidated deposits, Fewer tags
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This dataset describes the quantity and morphology of microplastics in water, surficial sediment, sediment core, fish, and shellfish samples from Lake Mead National Recreation Area (Nevada/Arizona). Water and surficial sediment samples were collected once at 9 locations. A sediment core (33 cm long) was extracted from Las Vegas Bay to assess changes in microplastic deposition over time. Striped bass (Morone saxatilis), common carp (Cyprinus carpio), quagga mussels (Dreissena bugensis), and Asian clams (Corbicula fluminea) were sampled at a subset of locations to assess biological uptake of microplastics. Sampling and analysis methods are described in the Processing Steps section of the metadata. All samples were...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Environmental Health,
Lake Mead,
Lower Colorado,
USGS Science Data Catalog (SDC),
Water Quality, All tags...
Water Resources,
biota,
contamination and pollution,
inlandWaters,
microplastics,
surface water quality, Fewer tags
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This data release contains two tabular data sets of water-quality data collected on the East Fork Carson River. EFCR_CQW.xlsx is a Microsoft Excel workbook containing continuous water-quality data collected by the Nevada Division of Environmental Protection (NDEP) at a site on the East Fork Carson River over two time periods in 2010 and 2012. Data were collected at U.S. Geological Survey site number 385755119473704, East Fork Carson River near Muller Lane downstream transect, also referred to as "SDT" in the larger work. Stream temperature, pH, dissolved oxygen, and specific conductance were measured at 5 to 10 minute intervals from August 3-September 29, 2010 and from July 20-August 17, 2012. EFCR_StreamProfiles.xlsx...
Tags: Aquatic Biology,
Carson Valley,
East Fork Carson River,
Ecology,
Minden, All tags...
Nevada,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
algae,
biota,
denitrification,
discharge,
dissolved oxygen,
environment,
groundwater,
groundwater and surface-water interaction,
hydraulic gradient,
inlandWaters,
nitrate plus nitrite,
nutrient content (water),
observation well,
orthophosphate,
oxygen content (water),
profiles,
specific conductance,
stream stage,
surface water (non-marine),
time series data sets,
water pH,
water quality,
water temperature, Fewer tags
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A time series of nutrient and mean daily discharge data were used to create models of daily concentration and loads for selected streams of the Lake Tahoe watershed. A total of 15 sites have records ranging from as early as 1972 to 2017. Nutrients in the data set include nitrate, ammonium, Kjeldahl Nitrogen, orthophosphate, and total phosphorus. Total suspended sediment concentrations are also included. Discharge data are included as mean daily values in cubic meters per second. The data were used to produce daily and annual models of concentrations and loads and associated daily and annual loads of these constituents. Trends in these constituents were also calculated. The U.S. Geological Survey model, Weighted...
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