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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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Meteorological Database, Argonne National Laboratory, Illinois, January 1, 1948 - September 30, 2015

This data release is the update of the data release Bera and Over (2016) with the processed data through September 30, 2015. The primary data for each year is downloaded from the ANL website (http://gonzalo.er.anl.gov/ANLMET/numeric/) and is processed following the guidelines documented in Over and others (2010). References Cited: Over, T.M., Price, T.H., and Ishii, A.L., 2010, Development

Toxicity and chemistry data from an evaluation of metal-contaminated sediments from the Upper Columbia River, Washington, 2013-2014

This resource contains chemistry and toxicity data from sediment toxicity tests conducted by the USGS Columbia Environmental Research Center with 66 sediment samples collected from in and around the Upper Columbia River in the fall of 2013. Toxicity testing was conducted from fall 2013 through summer 2014 with the amphipod, Hyalella azteca, the midge Chironomus dilutus, and the mussel Lampsilis si

Standardization and Application of an Index of Community Integrity for Waterbirds in the Chesapeake Bay

In recent decades, there has been increasing interest in the application of ecological indices to assess ecosystem condition in response to anthropogenic activities. DeLuca et al. (2008) developed an Index of Waterbird Community Integrity (IWCI) to evaluate breeding waterbird response to anthropogenic activities in the Chesapeake Bay, USA. As we attempted to apply this index to a study in the same

Delineation of marsh types and marsh type-change in Coastal Louisiana for 2007 and 2013

The Bureau of Ocean Energy Management (BOEM) researchers often require detailed information regarding emergent marsh vegetation types (i.e., fresh, intermediate, brackish, and saline) for modeling habitat capacities and mitigation. In response, the U.S. Geological Survey, in collaboration with the Bureau of Ocean Energy Management produced a detailed change classification of emergent marsh vegetat

Potentiometric contours for the Nacatoch aquifer of Northeastern and Southwestern Arkansas and the Tokio aquifer of Southwestern Arkansas, 201415

The Nacatoch Sand in northeastern and southwestern Arkansas and the Tokio Formation in southwestern Arkansas are sources of groundwater for agricultural, domestic, industrial, and public use. Water-level altitudes measured in 51 wells completed in the Nacatoch Sand and 42 wells completed in the Tokio Formation during 2014 and 2015 were used to compile potentiometric-surface maps of the two areas.

Monthly trematode infections of the snail Cerithidiopsis (Cerithidea) californica at Carpinteria Salt Marsh, California USA, February 2012 to January 2014

Each month (except March 2012), we collected detailed data on the infection status of intertidal snails from ten fixed sites as part of a broader effort to understand food webs in California Estuaries. The study site was Carpinteria Salt Marsh Reserve, California USA, (University of California Natural Reserve System), which comprises 9 Ha tidal channels, 2 Ha salt flats, 17 Ha upland habitat, 6 Ha

Data release for persistence of historical population structure in an endangered species despite near-complete biome conversion in Californias San Joaquin Desert

The recency of large-scale land conversion in Californias San Joaquin Desert raises the probability that the regions numerous endemic species still retain genetic signatures of historical population connectivity. If so, genomic data can serve as a guidance tool for conserving lands that once supported habitat for gene movement. We studied the genetic structuring of the endangered blunt-nosed leopa

Bridge Scour Countermeasure Assessment Data for Select Bridges in the United States

Scouring of streambed material surrounding bridge structures is a leading cause of bridge failure in the United States. Damages resulting from bridge failure oftentimes lead to financial burdens and loss of life. To date, there has been no comprehensive evaluation of the current (2016) effectiveness of the guidance or overall long-term performance of bridge-scour countermeasures provided in the Fe

Carrying capacity in a heterogeneous environment with habitat connectivity

The data are population sizes of yeast Saccharaomyces cerevisiae growth in laboratory cultures over a period of several days with different levels of growth inhibitor cycloheximide.

A Reservoir Morphology Database for the Conterminous United States

The U.S. Geological Survey, in cooperation with the Reservoir Fisheries Habitat Partnership, combined multiple national databases for the purpose of calculating new morphological metrics not included in the original databases for 3,828 reservoirs. These new metrics include, but are not limited to, shoreline development index, index of basin permanence, and development of volume and other descript

A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA

The ascii grids associated with this data release are model inputs representing the Central Valley aquifer, California, and predicted nitrate concentrations (as NO3-N, mg/L) at two depth zones associated with private and public drinking water supply wells, respectively, . The model input and prediction grids are bound by the alluvial bed boundary that defines the Central Valley. The prediction gri

Common lead isotopic measurements in silicate glasses and minerals by laser ablation double-focusing SC-ICPMS (2017)

This dataset is related to a 2017 journal article by A. J. Pietruszka and L. A. Neymark titled "Evaluation of laser ablation double-focusing SC-ICPMS for "common" lead isotopic measurements in silicate glasses and minerals" that is published in the Journal of Analytical Atomic Spectrometry (doi:10.1039/c7ja00005g).