Data and Tools

Science Datasets

The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.

Filter Total Items: 9,438
Date published: November 5, 2019

Testing reproducibility of vitrinite and solid bitumen reflectance measurements in North American unconventional petroleum systems (2019)

To test reproducibility of vitrinite and solid bitumen reflectance measurements in mudrocks, an interlaboratory study (ILS) was conducted using six samples from United States unconventional petroleum systems. Samples selected from the Marcellus, Haynesville, Eagle Ford, Barnett, Bakken and Woodford are representative of resource plays currently under exploitation in North America. All samples...

Date published: November 5, 2019

Peak-flow frequency analysis for USGS 05494300 Fox River at Bloomfield, Iowa, in the Fox River Basin Iowa, based on data through water year 2018

This data release presents a peak-flow frequency analysis for USGS 05494300 Fox River at Bloomfield, Iowa, that was based on methods described by Eash and others (2013)(https://pubs.usgs.gov/sir/2013/5086/). The methods are used to provide estimates of peak-flow quantiles for 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual exceedance...

Date published: November 5, 2019

Updated CE–QUAL–W2 water-quality model for Madison Lake, Minnesota (2014 and 2016)

The U.S. Geological Survey (USGS), in cooperation with the St. Croix River Research Station – Science Museum of Minnesota, updated a previously developed CE-QUAL-W2 hydrodynamic and water-quality model of Madison Lake, Minnesota (Smith and others, 2017). The previous version simulated phytoplankton into four general algal communities or groups: (1) Bacillariophyta (diatoms) and...

Date published: November 5, 2019

Stable Mercury Isotopic Analyses in Natural Matrices via Rapid Pre-Concentration Method Data Release

This data relates to the development of a modified pre-concentration method for mercury (Hg) stable isotope measurements that uses chemical Hg reduction and gold trap amalgamation followed by semi-rapid thermal desorption (less than 1 hour) and chemical trapping in a novel oxidizing solution. The thermal desorption method was demonstrated to perform adequately on multiple trapping matrices...

Date published: November 5, 2019

Soil properties and greenhouse gas fluxes of Prairie Pothole Region wetlands: a comprehensive data release

This data release encompass numerous studies examining soil properties and greenhouse gas fluxes of Prairie Pothole Region (PPR) wetland catchments. The PPR is one of the largest wetland ecosystems in the world, encompassing approximately 770,000 square kilometers of the north-central U.S. and south-central Canada, with the U.S. portion including parts of Iowa, Minnesota, South Dakota, North...

Date published: November 5, 2019

Digitized Historical Borehole Geophysical Logs Throughout the Mississippi Alluvial Plain Aquifer System.

This data release consists of historical borehole geophysical data collected by various entities and digitally recreated by the U.S. Geological Survey to characterize the physical properties of the subsurface in the Mississippi Alluvial Plain from Louisiana to Missouri. The geophysical log data were collected by different Federal, state, and local agencies throughout the area, and were...

Date published: November 5, 2019

Geospatial data of watershed characteristics for select U.S. Geological Survey streamflow-gaging stations in New Mexico, Oklahoma, and Texas useful for statistical study of annual peak streamflows in and near Texas

This dataset provides numerical descriptions of 80 watershed characteristics for 1,703 watersheds with observed streamflow information at U.S. Geological Survey (USGS) streamflow-gaging stations (gages). These gages are all located within the states of Texas, Oklahoma, and New Mexico (east of the continental divide), but the watersheds extend outside of these boundaries. Characteristics are...

Date published: November 4, 2019

Response variables derived from predicted high-frequency chloride concentrations and specific conductance values

This data set contains 18 metrics used to describe patterns in specific conductance (SC) and chloride concentrations in 93 streams located across the eastern United States. These data were quantified for an analysis described in Moore and others (in review). All metrics were quantified for a water year and a median was taken across all years for which data were available to provide a single...

Date published: November 4, 2019

Aeromagnetic data, grid data, and magnetization boundaries of a survey flown in the Burney region, northeastern California

This data release contains data from flightlines collected during an aeromagnetic survey of the Burney region of northeastern California. These data were gridded and magnetization boundaries were calculated using the maximum horizontal gradient method on the gridded data.

Date published: November 4, 2019

Chloride-specific conductance regression model forms for estimating high-frequency chloride concentrations

The file "Chloride_specific_conductance_regression_model_forms_for_estimating_high-frequency_chloride_concentrations.csv" contains the regression equation forms for two types of regressions: 1) single linear (SLR) and 2) piecewise (or segmented; SEG) regression between specific conductance (SC) and chloride (Cl) concentrations for 56 USGS water-quality monitoring stations across the eastern...

Date published: November 4, 2019

Discrete and high-frequency chloride (Cl) and specific conductance (SC) data sets and Cl-SC regression equations used for analysis of 93 USGS water quality monitoring stations in the eastern United States

High frequency estimated chloride (Cl) and observed specific conductance (SC) data sets, along with response variables derived from those data sets, were used in an analysis to quantify the extent to which deicer applications in winter affect water quality in 93 U.S. Geological Survey water quality monitoring stations across the eastern United States. The analysis was documented in the...

Date published: November 4, 2019

Input data for chloride-specific conductance regression models

This data set includes input data for the development of regression models to predict chloride from specific conductance (SC) data at 56 U. S. Geological Survey water quality monitoring stations in the eastern United States. Each site has 20 or more simultaneous observations of SC and chloride. Data were downloaded from the National Water Information System (NWIS) using the R package...