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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Zircon U-Pb data for Proterozoic rocks in southwestern Colorado and rocks from drill core from Wyoming, Montana, and Nebraska Zircon U-Pb data for Proterozoic rocks in southwestern Colorado and rocks from drill core from Wyoming, Montana, and Nebraska
This U.S. Geological Survey (USGS) data release provides U-Pb zircon data and geochronology for Proterozoic rocks in the Needle Mountains of southwestern Colorado and for Proterozoic rocks sampled from drill cores from Wyoming, Montana, and Nebraska. Samples from the Needle Mountains were collected in order to constrain the polyphase tectonic evolution of the area. Drill core samples are...
Evansville Urban Seismic Hazard Maps, v2010 Evansville Urban Seismic Hazard Maps, v2010
Evansville, Indiana has a dense urban population near faults capable of producing major earthquakes. A high probability of a moderate earthquake in the near future (e.g., a 25–40% probability of a magnitude 6.0 or greater in the next 50 years) from the New Madrid seismic zone, and more moderate probability of a similar-sized earthquake in the Wabash Valley, coupled with relatively low...
Data for laboratory experiments conducted with the caddisflies Hydropsyche californica and Arctopsyche grandis to derive copper and cadmium bioaccumulation parameters Data for laboratory experiments conducted with the caddisflies Hydropsyche californica and Arctopsyche grandis to derive copper and cadmium bioaccumulation parameters
This USGS data release includes data from experiments conducted with two species of caddisflies (Hydropsyche californica and Arctopsyche grandis (Order: Trichoptera) to quantify copper and cadmium uptake and loss after dissolved and dietary exposures. Both Arctopsyche and Hydropsyche belong to the family Hydropsychidae (O: Trichoptera). They are relatively sessile, net-spinning filter...
Cyanotoxin concentrations in extracts from cyanobacteria colonies, plankton net tows, and Solid Phase Adsorption Toxin Tracking (SPATT) samplers in western rivers, lakes, and reservoirs, including drinking water sources in the Oregon Cascades: 2016-2020 Cyanotoxin concentrations in extracts from cyanobacteria colonies, plankton net tows, and Solid Phase Adsorption Toxin Tracking (SPATT) samplers in western rivers, lakes, and reservoirs, including drinking water sources in the Oregon Cascades: 2016-2020
This data release contains cyanotoxin concentrations for microcystins, cylindrospermopsins, anatoxins, and saxitoxins assessed using Enzyme-Linked Immunosorbent Assays (ELISA) on 363 samples collected from 82 surface-water sites located in the Cascade Range in Oregon, and eight sites located outside of the Oregon Cascade Range in Washington and California, during 2016-2020. Three sample...
Ecological, Geomorphological, Sedimentological, and Geochemical Records of Pre- and Post-Colonial Riparian Ecosystems in Anne Arundel County, Maryland Ecological, Geomorphological, Sedimentological, and Geochemical Records of Pre- and Post-Colonial Riparian Ecosystems in Anne Arundel County, Maryland
This data release includes data collected in the pursuit of identifying pre- and post-colonial riparian ecosystems found throughout Anne Arundel County, Maryland, USA. A single raster file is included, and represents a topological classification of the entire county according to a hydrologically conditioned Digital Elevation Model (DEM). Ten shapefiles are also included, nine of which...
Model archive summaries for turbidity derived suspended-sediment concentration at USGS stations 01349527 Mohawk River above State Highway 30A at Fonda, 01351500 Schoharie Creek at Burtonsville, and 01357500 Mohawk River at Cohoes, New York, 2015-20 Model archive summaries for turbidity derived suspended-sediment concentration at USGS stations 01349527 Mohawk River above State Highway 30A at Fonda, 01351500 Schoharie Creek at Burtonsville, and 01357500 Mohawk River at Cohoes, New York, 2015-20
These model archive summaries document surrogate regression models developed to estimate suspended-sediment concentration (SSC) at three USGS streamgages in New York: Mohawk River above State Highway 30A at Fonda, USGS site number 01349527; Schoharie Creek at Burtonsville, USGS site number 01351500; and Mohawk River at Cohoes, USGS site number 01357500. Ordinary least squares regression