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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Little Rock Reservoir, California, 2022 bathymetric survey and stage-storage computations Little Rock Reservoir, California, 2022 bathymetric survey and stage-storage computations
This bathymetric dataset provides an update to the stage-storage relation for Little Rock Reservoir located in the Angeles National Forest, California. Bathymetric data was collected using a multibeam echo sounder to provide near-complete coverage and was merged with U.S. Geological Survey 3D Elevation Project lidar to compute a digital elevation model (DEM) of the reservoir and...
Cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at twelve large river sites throughout the United States, June through October 2019 Cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at twelve large river sites throughout the United States, June through October 2019
This U.S. Geological Survey (USGS) data release provides discretely measured cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected from twelve large river sites throughout the United States, from June through October 2019. Discrete water-quality samples were analyzed for cyanotoxins (anatoxin, cylindrospermopsin, microcystin, and saxitoxin), chlorophyll-a...
Physicochemical measurements of the coastal aquifer and coastal groundwater discharge on Kalaupapa, Moloka'i, Hawaii Physicochemical measurements of the coastal aquifer and coastal groundwater discharge on Kalaupapa, Moloka'i, Hawaii
This data table includes in-situ near-shore seawater measurements of excess radon (Rn-222), tide and crater lake water levels and salinity collected in Kalaupapa, Moloka'i, Hawaii.
County-level maps of cropland surface water inundation measured from Landsat and MODIS County-level maps of cropland surface water inundation measured from Landsat and MODIS
This dataset represents a summary of potential cropland inundation for the state of California applying high-frequency surface water map composites derived from two satellite remote sensing platforms (Landsat and Moderate Resolution Imaging Spectroradiometer [MODIS]) with high-quality cropland maps generated by the California Department of Water Resources (DWR). Using Google Earth Engine...
Borehole data for pre-Cretaceous basement rocks beneath the Atlantic Coastal Plain, Georgia and South Carolina Borehole data for pre-Cretaceous basement rocks beneath the Atlantic Coastal Plain, Georgia and South Carolina
Data from 391 boreholes (including coreholes) that penetrated buried pre-Cretaceous basement rocks that lie beneath Atlantic Coastal Plain sedimentary deposits in Georgia and South Carolina were compiled from non-proprietary, mostly published sources in order to support subsurface geologic mapping, geologic interpretation of geophysical data (aeromagnetic, gravity, seismic), topical...
Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, Taxodium distichum growth Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, Taxodium distichum growth
In 2013 five Taxodium distichum trees along a 125 m long transect of Hickory Point State Forest outside Pocomoke City, Maryland were outfitted with dendrobands. Each year the growth of the T. distichum trees was measured in terms of the ratio of that year's circumference to the previous year's circumference. Tree growth was measured until the year the tree died or the conclusion of the...
Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, tree height and density 2021 Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, tree height and density 2021
On November 11, 2021, the height, density, and species richness of trees were recorded in five plots along a 175 m transect at Hickory Point State Forest near Pocomoke City, Maryland. This data was divided into categories depending on if the tree was alive, dead, or a sapling. Emergent species' height, density, and richness was also recorded.
Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, vegetation Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, vegetation
This dataset documents the water quality in depth, salinity, and pH as well as the vegetation found in the freshwater swamps of Hickory Point State Forest near Pocomoke City, Maryland from 2013 to 2021.
Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, CTD Diver data Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, CTD Diver data
This dataset represents data collected from 2018 to 2021 by a submersible datalogger known as a CTD Diver located in a well 48 cm below soil level at Hickory Point State Forest near Pocomoke City, Maryland.
USGS National and Global Oil and Gas Assessment Project-Senegal Basin Province: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables USGS National and Global Oil and Gas Assessment Project-Senegal Basin Province: Assessment Unit Boundaries, Assessment Input Data, and Fact Sheet Data Tables
This data release contains the boundaries of assessment units, assessment input data and resulting fact sheet data tables for the assessment of undiscovered oil and gas resources in the Senegal Basin Province of northwest Africa. The Assessment Unit is the fundamental unit used in the National and Global Oil and Gas Assessment Project for the assessment of undiscovered oil and gas...
Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, roots Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, roots
Annual root production over time was measured by collecting data on ingrowth into mesh root bags. The study was conducted on tidal freshwater swamp environments subjected to salinity intrusion at Hickory Point State Forest near Pocomoke City, Maryland. Root bags were collected at 5 set locations within the study area from 2013 to 2021 and analyzed to determine the weight in grams of new...
Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, SET Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, SET
This study was conducted using surface elevation tables (SETs) to determine the change in soil height over time. The study took place at Hickory Point State Forest near Pocomoke City, Maryland from 2015 to 2021. Instead of using the SETs to measure elevation, this dataset uses the concept of the height of the topographic surface established with respect to a local vertical datum, which...