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Per- and Polyfluoroalkyl Substances (PFAS) and Co-occurring Contaminants in the Fraser River, a Headwater Tributary to the Colorado River - September 2021 to August 2023 Per- and Polyfluoroalkyl Substances (PFAS) and Co-occurring Contaminants in the Fraser River, a Headwater Tributary to the Colorado River - September 2021 to August 2023
The Fraser River, located in the Colorado Rocky Mountains, is a headwater tributary to the Upper Colorado River. This investigation by the U.S. Geological Survey (USGS) Water Mission Area, Water Quality Processes Program Proxies Project was conducted from September 2021 through August 2023 and consisted of eight sampling events incorporating 17 sites (15 stream sites and two wastewater...
Concentrations of Inorganic and Organic Substances in Lake Ontario and Surrounding Tributaries, New York, April to October 2023 Concentrations of Inorganic and Organic Substances in Lake Ontario and Surrounding Tributaries, New York, April to October 2023
This data release contains nutrient, metal, hormone, pharmaceutical, dioxin, and furan concentration data and field readings associated with surface water samples collected from 35 locations along the New York shoreline of Lake Ontario and surrounding tributaries. Samples were collected from April 2023 through October 2023 at nearshore, embayment, and tributary sites from Niagara River...
2025 Delaware Dataset and Code for Stacked Machine Learning-Based Timber Identification Using Laser-Induced Breakdown Spectroscopy 2025 Delaware Dataset and Code for Stacked Machine Learning-Based Timber Identification Using Laser-Induced Breakdown Spectroscopy
This study evaluated the use of stacked machine learning for wood species identification based on Laser Induced Breakdown Spectroscopy data. The approach combined three types of Support Vector Machine classifiers (linear, polynomial, and radial kernels) using a One-vs-All strategy. The outputs were combined through a Partial Least Squares Discriminant Analysis meta-learner. Variable...
Application of a prior-based model discrimination framework using synthetic MODFLOW 6 groundwater models Application of a prior-based model discrimination framework using synthetic MODFLOW 6 groundwater models
A synthetic one-dimensional groundwater flow model was developed using MODFLOW 6 as a test application of the prior-based model discrimination method described in the associated publication (https://doi.org/10.1029/2025WR040323). The model represents a steady-state unconfined aquifer where water flows horizontally between two constant head boundaries (a lake at the lefthand side and...
SWAT Outputs for Baseline Soil and Water Assessment for Los Planes Watershed, Baja California Sur, Mexico SWAT Outputs for Baseline Soil and Water Assessment for Los Planes Watershed, Baja California Sur, Mexico
This data release contains Soil Water Assessment Tool (SWAT) outputs (.shp) for three precipitation scenarios for the Los Planes watershed in Baja California Sur, Mexico. The inputs used are publicly available low-resolution data from international sources to produce uncalibrated baseline model conditions. The outputs for each scenario include annual average surface runoff (mm), sediment...
Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) in Lake Ontario and Surrounding Tributaries, New York, July to September 2023 Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) in Lake Ontario and Surrounding Tributaries, New York, July to September 2023
This data release contains per- and polyfluoroalkyl substances (PFAS) concentration data from surface water samples collected from 35 locations along the New York shoreline of Lake Ontario and surrounding tributaries. Samples were collected monthly from July 2023 through September 2023 at nearshore, embayments, and tributaries from Niagara River to Chaumont Bay. Nearshore and embayment...
Geophysical, geological, hydrological, and geochemical data for aquifer salinity mapping in the Midway Valley, Kern County, California Geophysical, geological, hydrological, and geochemical data for aquifer salinity mapping in the Midway Valley, Kern County, California
The U.S. Geological Survey (USGS) in cooperation with the California State Water Resources Control Board (State Water Board) compiled and analyzed data for mapping groundwater salinity, characterizing aquifer systems, and documenting the effects of oil-field water disposal and well integrity issues in the Midway Valley area of San Joaquin Valley, California, associated with the Midway...
Campaign GNSS Measurements Collected at Newberry Volcano by the Cascades Volcano Observatory Campaign GNSS Measurements Collected at Newberry Volcano by the Cascades Volcano Observatory
This data release contains data collected during campaign Global Navigation Satellite Systems (GNSS; formerly only the Global Positioning System or GPS) surveys conducted at Newberry Volcano. A survey in any given year may contain data from a subset of established sites depending on access, personnel, and the condition of the GNSS monument. For each site, we include raw data in binary or...
Campaign GNSS Measurements Collected at Mount Hood by the Cascades Volcano Observatory Campaign GNSS Measurements Collected at Mount Hood by the Cascades Volcano Observatory
This data release contains data collected during campaign Global Navigation Satellite Systems (GNSS; formerly only the Global Positioning System or GPS) surveys conducted at Mount Hood. A survey in any given year may contain data from a subset of established sites depending on access, personnel, and the condition of the GNSS monument. For each site, we include raw data in binary or...
Future forest habitat conditions in the Adirondack Region: Developing Inputs for the LANDIS-II model Future forest habitat conditions in the Adirondack Region: Developing Inputs for the LANDIS-II model
This data release includes raster and text input files to initialize and run the forest disturbance and succession landscape simulation model, LANDIS-II with the Biomass Succession extension for the study area in the Adirondacks (ADK) National Park, New York, USA. The goal of this project was to develop inputs to forecast future spruce-fir forest extent using the landscape model LANDIS...
Literature rates of measured methane fluxes from tidal wetland soils to the atmosphere Literature rates of measured methane fluxes from tidal wetland soils to the atmosphere
This data release reports a compilation of the literature that included measurements of both methane gas emission fluxes from the soil to atmosphere, and salinity, in different types of tidal wetlands around the globe. Rates were included for in situ measurements of methane flux in natural tidal wetlands but not experimental treatments or restored wetlands.
USGS National and Global Oil and Gas Assessment Project—Gulf Coast Mesozoic Province, Haynesville Formation Water and Proppant Assessment: Assessment Input Tables and Fact Sheet Data Tables USGS National and Global Oil and Gas Assessment Project—Gulf Coast Mesozoic Province, Haynesville Formation Water and Proppant Assessment: Assessment Input Tables and Fact Sheet Data Tables
The input and results tables provide a record of the complete input and output values required for the quantitative assessment of water and proppant associated with oil and gas production for the continuous oil and gas resource in a geologically defined Assessment Unit. The same input form template is used for all such assessments. Each USGS water and proppant assessment builds from a...