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Reconnaissance of Per- and Polyfluoroalkyl Substances (PFAS) in Selected Groundwater and Surface Water Sites in McHenry County, Illinois, 2020 Reconnaissance of Per- and Polyfluoroalkyl Substances (PFAS) in Selected Groundwater and Surface Water Sites in McHenry County, Illinois, 2020
Data were collected at 19 groundwater monitoring wells and 3 surface water locations across McHenry County, Illinois, in 2020 by staff from the U.S. Geological Survey (USGS) Central Midwest Water Science Center. Quality control samples (2 blanks and 1 replicate) were also collected to assess data reliability and precision. Samples were submitted to the USGS National Water Quality...
REDPy - Repeating Earthquake Detector in Python (Version 1.0.0) REDPy - Repeating Earthquake Detector in Python (Version 1.0.0)
REDPy (Repeating Earthquake Detector in Python) is a tool for automated detection and analysis of repeating earthquakes in continuous data. It works without any previous assumptions of what repeating seismicity looks like (that is, does not require a template event). Repeating earthquakes are clustered into families based on waveform similarity via cross-correlation across multiple...
Reduced representation sequencing and genotyping of Arizona Toads (Anaxyrus microscaphus) from the southwestern United States Reduced representation sequencing and genotyping of Arizona Toads (Anaxyrus microscaphus) from the southwestern United States
The dataset consists of genotypes (diploid base calls at variant sites) at 3,601 anonymous sites of the Arizona Toad (Anaxyrus microscaphus) nuclear genome. The genotyped samples are representative of the range of the species and its major population units, and the genotyped loci have a high degree of completeness. This data release consists of several files: 1. sample.metadata.txt...
Reef-census Data from Buck Island Reef National Monument Reef-census Data from Buck Island Reef National Monument
In July of 2016, Florida Institute of Technology researchers, in collaboration with the U.S. Geological Survey (USGS), conducted reef-census surveys at 54 sites around Buck Island Reef National Monument, St. Croix, U.S. Virgin Islands. The sites are divided across two reef sectors (North and South) and three reef habitats (fore reef, reef crest, and back reef) (Figure 1). These data were...
Reflectance measurements for eight samples submitted to the USGS Organic Petrology Laboratory in Reston Reflectance measurements for eight samples submitted to the USGS Organic Petrology Laboratory in Reston
This data release contains reflectance measurements for eight samples submitted to the USGS Organic Petrology Laboratory in Reston. Samples include two artificial rock samples made from cement with organic matter added (samples 001-002), a coal and shale sample (samples 003-004, respectively), and hydrous pyrolysis residues for samples 001-004. The hydrous pyrolysis experiments were...
Regional geophysical maps of the Great Basin, USA Regional geophysical maps of the Great Basin, USA
Regional geophysical maps of the Great Basin, USA were generated from new and existing sources to support ongoing efforts to characterize geothermal resource potential in the western US. These include: (1) a provisional regional gravity grid that was produced from data compiled from multiple sources: data collected by the USGS and Utah Geological Survey under various projects, industry...
Regional patterns in foraging ecology between adult roseate and common terns in the Northwest Atlantic Regional patterns in foraging ecology between adult roseate and common terns in the Northwest Atlantic
Co-occurring species with similar resource requirements often partition ecological niches. In the Northwest Atlantic (NWA), endangered roseate terns (Sterna dougallii) nest almost exclusively in coastal island colonies alongside common terns (S. hirundo). Roseate terns are prey specialists compared to common terns, which are opportunistic generalists; however, the two species forage on...
Regional Water Table (2018) in the Mojave River and Morongo Areas, Southwestern Mojave Desert, California Regional Water Table (2018) in the Mojave River and Morongo Areas, Southwestern Mojave Desert, California
Data for groundwater-levels measured in 707 wells during January-July 2018 by the United States Geological Survey (USGS), the Mojave Water Agency (MWA), and other local water districts were compiled to construct a regional water-table shapefile for 2018. The regional water-table shapefile shows the elevation of the water table in and around the Mojave River and Morongo areas, in San...
Regional Water Table (2020) in the Mojave River and Morongo Areas, Southwestern Mojave Desert, California Regional Water Table (2020) in the Mojave River and Morongo Areas, Southwestern Mojave Desert, California
Data for groundwater-levels measured in 616 wells during water year 2020 (November 2019-June 2020) by the United States Geological Survey (USGS), the Mojave Water Agency (MWA), and other local water districts were compiled to construct a regional water-table shapefile for 2020. The regional water-table shapefile shows the elevation of the water table in and around the Mojave River and...
Regional water table Contours of the Antelope Valley and Fremont Valley groundwater basins, Southwestern Mojave Desert, California, March 2014 Regional water table Contours of the Antelope Valley and Fremont Valley groundwater basins, Southwestern Mojave Desert, California, March 2014
Water levels were measured during March 2014 in wells in the Antelope Valley and Fremont Valley groundwater basins, southwestern Mojave Desert, California, in cooperation with the Antelope Valley-East Kern Water District, Palmdale Water District, and Littlerock Creek Irrigation District. These data document recent conditions and, when compared with previous data, changes in groundwater...
Regression and load estimates for the tributary nutrient and sediment monitoring program on the Great Lakes, 2011-2013 Regression and load estimates for the tributary nutrient and sediment monitoring program on the Great Lakes, 2011-2013
Nutrient and sediment regression information (diagnostics and coefficients) and estimated load data from 30 tributaries to the Great Lakes, beginning of the program (water year 2011) to water year 2013.
Relative distance of California's Central Valley from trough to valley edge and supporting data Relative distance of California's Central Valley from trough to valley edge and supporting data
California's Central Valley ranges from the mountain fronts toward a central trough, mainly defined by the San Joaquin and Sacramento Rivers, and the relative distance from trough to valley edges is of interest. This data release provides supplemental data for the USGS Professional Paper 1766, titled Groundwater Availability of the Central Valley Aquifer, California and provides...