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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Riparian vegetation metrics for the Colorado River between Glen Canyon Dam and Lake Mead, AZ Riparian vegetation metrics for the Colorado River between Glen Canyon Dam and Lake Mead, AZ
These data were compiled to assess the status and trends of riparian plant communities along the Colorado River between Glen Canyon Dam and Lake Mead, AZ. Three metrics have been proposed to evaluate the "Riparian Vegetation" goal identified in the Glen Canyon Dam Adaptive Management Program's Long Term Experimental and Management Plan (U.S. Department of Interior, 2016). The three...
2015 National Coastal Conditions Assessment: Algal Toxins and Cyanotoxins in United States Great Lakes Samples Detected by Liquid Chromatography Triple Quadrupole Mass Spectrometry (LC/MS/MS) 2015 National Coastal Conditions Assessment: Algal Toxins and Cyanotoxins in United States Great Lakes Samples Detected by Liquid Chromatography Triple Quadrupole Mass Spectrometry (LC/MS/MS)
The EPA National Coastal Condition Assessment (NCCA) is a nation-wide survey of coastal and estuarine water quality. During the 2015 EPA NCCA, samples were collected for analysis of algal toxins and cyanotoxins at the Organic Geochemistry Research Laboratory (OGRL) at the U.S. Geological Survey Kansas Water Science Center (KSWSC) by liquid chromatography triple quadrupole mass...
Species distribution modeling estimates for four groundwater-dependent amphibians Species distribution modeling estimates for four groundwater-dependent amphibians
Climate change is substantially impacting earth’s biodiversity, with a massive number of affected species that are difficult to study comprehensively. An “indicator species” approach that generalizes species-specific climate change impacts to broader groups (e.g., ensembles) could theoretically help overcome this challenge and streamline climate-smart conservation planning. We assessed...
Data to Assess Nitrogen Export from Forested Watersheds in and near the Long Island Sound Basin with Weighted Regressions on Time, Discharge, and Season (WRTDS) Data to Assess Nitrogen Export from Forested Watersheds in and near the Long Island Sound Basin with Weighted Regressions on Time, Discharge, and Season (WRTDS)
The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency's Long Island Sound Study (https://longislandsoundstudy.net), characterized nitrogen export from forested watersheds and whether nitrogen loading has been increasing or decreasing to help inform Long Island Sound management strategies. The Weighted Regressions on Time, Discharge, and Season (WRTDS...
FlowDat: Volcanic Mass Flow Database FlowDat: Volcanic Mass Flow Database
Volcanic mass flows, especially lahars and pyroclastic density currents (PDCs) are among the most destructive volcanic hazards due to their speed, mobility, and the often-unexpected behavior these flows exhibit as they interact with topography. Mitigation of risk associated with PDCs and other volcanic mass flows depends upon accurate forecasting of magnitude and frequency, potential...
Occurrence Data for the Western Spadefoot (Spea hammondii) in Southern California From 1995 to 2020 and Projected Species Distribution Model Occurrence Data for the Western Spadefoot (Spea hammondii) in Southern California From 1995 to 2020 and Projected Species Distribution Model
These data represent the results of surveys for western spadefoots in southern California, including both presence and non-detection data. In addition, data include environmental covariates that were hypothesized to influence the occurrence of western spadefoots, such as land cover and distance to aquatic features. These data support the following publication: Rose, J.P., Halstead, B.J