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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Concentration of PFOS (perfluorooctanesulfonic acid) in water and freshwater diatoms (Mayamaea atomus) in a bioaccumulation study conducted at U.S. Geological Survey, Columbia Environmental Research Center in July 2021 Concentration of PFOS (perfluorooctanesulfonic acid) in water and freshwater diatoms (Mayamaea atomus) in a bioaccumulation study conducted at U.S. Geological Survey, Columbia Environmental Research Center in July 2021
Two laboratory experiments were conducted to understand PFOS (perfluorooctanesulfonic acid) bioaccumulation in freshwater benthic diatoms (Mayamaea atomus). The first experiment tested bioconcentration at multiple PFOS concentrations (0, 0.01, 0.1, 1, 10, 100 micrograms per liter) after 7 days of exposure. The second explored uptake and depuration of 0.1 micrograms per liter PFOS at...
Water Quality Vertical Profile Data to Support Embayment Monitoring in Long Island Sound, Saugatuck and Sasco-Southport Embayments, Connecticut, 2022-2024 Water Quality Vertical Profile Data to Support Embayment Monitoring in Long Island Sound, Saugatuck and Sasco-Southport Embayments, Connecticut, 2022-2024
This data release includes vertical water-quality profile data collected from April 2022 to April 2024 at three locations in the Saugatuck River Embayment near Saugatuck, Connecticut, and two locations in the Mill River and one at the mouth of Sasco Brook near Southport Harbor, Connecticut, for the Sasco-Southport Embayment that discharge to Long Island Sound. These data were collected...
Rare Earth, Trace Metal, Phosphorus, and Base Cation Concentrations During Three High-Flow Events in a Headwater Stream in Vermont, USA Rare Earth, Trace Metal, Phosphorus, and Base Cation Concentrations During Three High-Flow Events in a Headwater Stream in Vermont, USA
The USGS team measured base cations, aluminum (Al), iron (Fe), manganese (Mn), rare earth elements (REEs), dissolved organic carbon (DOC), major anions, and phosphorus (P) in eight streamwater grab (manual) samples during each of three high-flow events (E-1, E-2, E-3) at the forested headwater catchment W-9, Sleepers River, Vermont, USA. E-1 was a large fall rainstorm, E-2 was a multi...
Data release for An early Holocene wet period from the southwestern U.S. Data release for An early Holocene wet period from the southwestern U.S.
Multiple generations of spring-fed streams traversed ~800 km2 of the Las Vegas Valley in southern Nevada between ~10.9 and 8.5 ka, depositing an extensive tufa network. The scale of this network and diversity of tufa morphologies is novel in North America and offers an opportunity to obtain quantitative paleoclimate data for the region during the early Holocene. We determined isotopic...
Summary of variations of specific conductance with altitude for selected groundwater monitoring wells, Saipan, Commonwealth of the Northern Mariana Islands Summary of variations of specific conductance with altitude for selected groundwater monitoring wells, Saipan, Commonwealth of the Northern Mariana Islands
This data release includes tabular summaries of specific conductance, temperature, and altitude (depth; CTD) and plots of specific conductance versus altitude at selected groundwater monitoring wells during July 2018–July 2024. The tabular summaries were developed using data retrieved from GeoLog Locator, an online database for quality-assured borehole geophysical data and accessible at...
Data release for a 3-hour, 1-km surface soil moisture dataset for the contiguous United States from 2015 to 2023 Data release for a 3-hour, 1-km surface soil moisture dataset for the contiguous United States from 2015 to 2023
We simulated a 3-hour, 1-km spatially seamless surface soil moisture (SSM) dataset (called STF_SSM) in the Contiguous United States (CONUS) using a virtual image pair-based spatio-temporal fusion method. This proposed approach effectively fuses the distinct advantages of two long-term SSM datasets, namely, the Soil Moisture Active Passive (SMAP) L4 SSM product and the Crop Condition and...