Data Releases
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.
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Monthly twelve-digit hydrologic unit code aggregations of the National Hydrologic Model Precipitation-Runoff Modeling System version 1.1 forced with CONUS404-BA, 1980-2021 (version 2.0, April 2025) Monthly twelve-digit hydrologic unit code aggregations of the National Hydrologic Model Precipitation-Runoff Modeling System version 1.1 forced with CONUS404-BA, 1980-2021 (version 2.0, April 2025)
This data release contains 15 variables from the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System (NHM-PRMS) version 1.1 modeling application forced with CONUS404-BA (Markstrom and others, 2024) from January 1980 through September 2021 that are summarized to a monthly time step and a twelve-digit hydrologic unit code for the spatial extent of the...
Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) and Other Chemical Constituents for Groundwater and Surface-Water Samples on Western Cape Cod, Massachusetts, 2014-2019 (ver. 1.1, November 2025) Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) and Other Chemical Constituents for Groundwater and Surface-Water Samples on Western Cape Cod, Massachusetts, 2014-2019 (ver. 1.1, November 2025)
Groundwater, surface water, and associated quality assurance samples were collected downgradient of an abandoned fire training area and wastewater infiltration beds on western Cape Cod, Massachusetts and analyzed for per- and polyfluoroalkyl substances (PFAS) from 2014-2019. Water-quality properties measured at the time of sample collection include pH, specific conductance, temperature...
Lead Concentrations and Isotope Ratios for Selected Water and Soil Samples Near Middleton Municipal Airport - Morey Field, Middleton, WI, 2022 Lead Concentrations and Isotope Ratios for Selected Water and Soil Samples Near Middleton Municipal Airport - Morey Field, Middleton, WI, 2022
In order to understand the provenance of lead in the surface water, groundwater, soils, and shallow pore water within and near the Middleton Municipal Airport–Morey Field (C29) in Middleton, WI, a subset of samples were sent to the Wisconsin State Lab of Hygiene for analysis. The results of these analyses are included in this data release and include both low-level lead concentrations...
Geophysical Data for Assessment of Karst Drainage Features in Genesee County, New York Geophysical Data for Assessment of Karst Drainage Features in Genesee County, New York
In September and November 2023, the U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation, collected geophysical surveys of 5 karst drainage features (sinkholes) in eastern Genesee County, New York, in order to study the nature of the subsurface fill material, bedrock topography, and karst dissolution features. Sites were surveyed using...
Puerto Rico new radiometric age analyses Puerto Rico new radiometric age analyses
This dataset contains U-Pb isotopic data and associated ages of zircons from selected igneous rocks collected from the region surrounding and including the uplands of the United States Territory of Puerto Rico. The samples were collected as part of geological mapping and research conducted during 2018 and funded by the Mineral Resources Program of the U.S. Geological Survey. Zircon...
Age Determinations from Various Geochronological Methods of Rock Samples in the Greater Antilles and Virgin Islands Age Determinations from Various Geochronological Methods of Rock Samples in the Greater Antilles and Virgin Islands
This data set contains various reported age determinations from various rock types collected from the larger region surrounding and including the islands of the Greater Antilles and United States Territory of Puerto Rico. Although a select few of the samples were collected as part of geological mapping and research conducted and funded by the Mineral Resources Program of the U.S...