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These data are the primary data used to estimate rainbow trout abundance and survival in the Colorado River, Glen and Grand Canyons. Refer to the analyses as per the associated journal manuscript (see Larger Work Citation). Prey availability, feeding efficiency, and competition reduce somatic growth and cause the collapse of a fish population" Nighttime boat electrofishing was used to sample rainbow trout four times per year in April, July, September, and January, from April 2012 through September 2016. A total of five reaches were sampled between Glen Canyon Dam (river kilometer [rkm] 0) to below the confluence with the Little Colorado River (located at rkm 130). Reaches ranged from two to six km in length. A total...
EAU BC is a hierarchical classification of BC's freshwater ecosystems. It is a spatially explicit classification designed to aid in the management and conservation of BC freshwater ecosystems and their associated biodiversity. EAU BC quantifies the interplay between freshwater species distribution and their ecosystem physical habitat, and environmental processes. It defines what is currently known about freshwater ecosystems and their abundance and distribution across the Province. It is packaged as a database and accompanying geographic information system (GIS) that enables the classification and its underlying data to be queried and viewed at multiple spatial scales. Available EAUBC GIS data include EAUBC Freshwater...
Note: This data release has been superseded by version 3.0, available here: http://doi.org/10.5066/P9UGEZPT This U.S. Geological Survey (USGS) data release provides phytoplankton data collected from Cheney Reservoir, Kansas, during June 2001 through October 2016. All data are reported as raw calculated values and are not rounded to USGS significant figures. This data release was produced in compliance with the open data requirements as a way to make scientific products associated with USGS research efforts and publications available to the public. The dataset includes all routine and quality-assurance/quality-control samples collected at the long-term sampling site on Cheney Reservoir near Cheney Dam (USGS station...
Categories: Data,
Data Release - Revised;
Tags: Algae,
Cheney Reservoir,
Division,
Freshwater,
Genus,
This U.S. Geological Survey (USGS) data release provides phytoplankton data collected as part of an advanced harmful algae bloom (HAB) monitoring study conducted in collaboration with the New York State Department of Environmental Conservation (NYSDEC). Samples were collected biweekly in association with continuous monitoring platforms in Owasco, Seneca, and Skaneateles Lakes, Finger Lakes Region, New York and one opportunistic bloom sample site at Emerson Park Boat Launch in Owasco Lake. The platforms were deployed from May-November in 2019 and June-October in 2020. This dataset includes all routine and quality assurance/quality control samples collected at the four sampling locations on the three lakes: three...
The combination of a complex hydrogeologic framework, narrow land masses surrounded by saltwater, and extensive ground-water public-supply pumpage has produced localized areas of elevated chloride concentrations in ground water. This project uses advanced surface and borehole geophysical methods to determine the extent of saltwater intrusion and road-salt plumes at selected sites in eastern Suffolk County, Long Island, NY. Two-dimensional resistivity sections have been integrated with borehole geophysical logs and water-quality data to produce cross-sections of road-salt plumes. Borehole geophysical logs are collected twice a year to determine variations in chloride concentration and thicknesses of intrusive...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Borehole Geophysics,
Borehole Geophysics,
Borehole Geophysics,
Cooperative Water Program,
GW or SW,
This U.S. Geological Survey (USGS) Data Release provides phytoplankton data for samples collected from twelve large river sites throughout the United States, from June through October 2019. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected as part of a National Water Quality Assessment Project pilot study to describe cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. Phytoplankton were identified to the lowest possible taxonomic level with both abundance (reported as both natural units and cells) and biovolume reported.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Algae,
Aquatic Biology,
California,
Chattahoochee River near Whitesburg, GA,
Connecticut,
This indicator combines measures of water quality, sediment quality, contaminants in fish tissue, and benthic community condition to create an overall index of coastal estuarine condition. It originates from the Environmental Protection Agency’s National Coastal Condition Assessment data.Reason for SelectionThis index measures the condition of the nation’s estuaries following standard national methodologies and is synthesized by the U.S. Environmental Protection Agency (EPA) roughly every five years. Estuaries serve as important nursery habitat for wildlife, including many species of fish and shellfish eaten as seafood. They also improve water quality by filtering out sediments and pollutants, provide recreational...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Coastal and Marine Indicator,
Coastal and marine,
Cultural,
Data,
Freshwater,
This file contains a generalized representation of watersheds developed from the 1:50,000 BC Watershed Atlas with each region coded for occurrence of freshwater fish species (including anadromous salmon in their freshwater stages). The initial fish species codes for presence/absence in each watershed were dervied from an GIS overlay of fish species occurrences within broadly defined fish regions for BC. This overlay of fish ranges describes the occurrences of fish species in 30 regions throughout the province. These broad species ranges were derived from McPhail and Carveth's 'Key to Freshwater Fish of BC' and refined further based on the most current expert opinion. Coding for watershed polygons based on this expert...
This U.S. Geological Survey (USGS) Data Release provides phytoplankton data collected from Cheney Reservoir, Kansas, during June 2001 through September 2020. All data are reported as raw calculated values and are not rounded to USGS significant figures. This data release was produced in compliance with the open data requirements as a way to make scientific products associated with USGS research efforts and publications available to the public. The dataset includes all routine and quality assurance/quality control samples collected at the long-term sampling site on Cheney Reservoir located near the dam (USGS station identification number 07144790). Phytoplankton were identified to the lowest possible taxonomic level...
Categories: Data,
Data Release - Revised;
Tags: Algae,
Cheney Reservoir,
Division,
Freshwater,
Genus,
Note: This data release has been superseded by version 2.0, available here: https://doi.org/10.5066/P968UDS7. This U.S. Geological Survey (USGS) data release provides zooplankton data collected from Cheney Reservoir, Kansas, during October 2008 through July 2021. All data are reported as raw calculated values and are not rounded to USGS significant figures. This data release was produced in compliance with the open data requirements as a way to make scientific products associated with USGS research efforts and publications available to the public. The dataset includes all routine and quality assurance/quality control samples collected at the long-term sampling site on Cheney Reservoir located near the dam (USGS...
Number of harmful species that have invaded freshwater habitats, by freshwater ecoregion. The occurrence and ecological impact for freshwater invasive species were compiled in a geographically referenced database according to the methods of Molnar et al. (2008). Information about 550 species was systematically collected from a wide variety of global, regional, national, and subnational data sources. Non-native distributions were documented by freshwater ecoregion. The threat of each species to native biodiversity was scored using the following categories: 4, disrupts entire ecosystem processes with wider abiotic influences; 3, disrupts multiple species, some wider ecosystem function, and/or keystone species or...
Dominant type of groundwater aquifer, by freshwater ecoregion. We derived the dominant groundwater features from the Groundwater Resources of the World data set, a product of the World-wide Hydrogeological Mapping and Assessment Programme (WHYMAP) (Struckmeir and Richts 2007). The WHYMAP Groundwater feature containing the largest surface area within an ecoregion was deemed the dominant feature. Groundwater classes are equivalent to classes stated in the WHYMAP data set. These data were derived by The Nature Conservancy, and were displayed in a map published in The Atlas of Global Conservation (Hoekstra et al., University of California Press, 2010). More information at http://nature.org/atlas. Data derived from:...
This data release includes concentrations of contaminants of emerging concern (CEC), by chemical class, for sites sampled within 25 river basins in the U.S. portion of the Great Lakes basin and associated watershed characteristics. The CEC data include concentrations in surface water and sediment samples that were collected during 2010-2014. During the first 3 years, sample sites near mostly urban areas were chosen. The last two years of study focused on other point sources and few nominal reference sites. Water and sediment samples were analyzed for a diverse suite of CECs including, but not limited to, pharmaceuticals, industrial chemicals, flame retardants, pesticides, fragrances, and plasticizers. Statistical...
This U.S. Geological Survey (USGS) Data Release provides discrete water-quality data collected from four sites on the Kansas River and four of its tributaries during July 2012 through September 2016. The water-quality constituents included in this data release are the cyanotoxins microcystin and cylindrospermopsin, the taste-and-odor compounds geosmin and 2-methylisoborneol, major ions, alkalinity, nutrients, suspended sediment, indicator bacteria, and actinomycetes bacteria.
Categories: Data;
Types: Citation;
Tags: 2-methylisoborneol,
Actinomycetes bacteria,
Alkalinity,
Big Blue River nr Manhattan, KS,
Chlorophyll,
Environmental conditions recorded at 2,256 Great Basin and Mojave Desert springs that were inventoried from the late 1980s into 2013 are summarized. These records provide information about individual springs and their spatial variability across the landscape. Insight into their changing condition is provided by records compiled at springs visited several times over more than 20 years. Although this summary considers a small proportion of springs in this region, it provides broad insight into their size, basic water chemistry, and conditions that are indicative of springs over a large portion of the southwestern US.
Area of wetlands in each freshwater ecoregion protected under Ramsar Convention. We derived the area of wetlands of international importance protected under the Ramsar Convention in each freshwater ecoregion from a subset of areas included in the World Database on Protected Areas (WDPA) compiled by the UNEP World Conservation Monitoring Centre (UNEP/IUCN 2007). All Ramsar sites in the database were included, except those known to be purely marine in extent, as indicated by the Marine Classes noted as subtidal in the WDPA. Intertidal marine Ramsar sites, however, are included in the analysis because the sites may include both brackish and fresh-waters. Area attributes for those Ramsar sites within the WDPA that...
Number of freshwater bird species, by freshwater ecoregion. Freshwater obligate birds include those species that need freshwater habitats for breeding (e.g., ducks, herons) or feeding (i.e., birds that depend almost exclusively on food found in freshwater habitats, such as freshwater fish, mollusks, and crustaceans). In all, 815 bird species were found to meet this criterion, with almost all bird families represented. We mapped freshwater bird species to freshwater ecoregions with the following procedures: for North and South America, NatureServe GIS data were summarized by freshwater ecoregion; for Africa, distribution maps presented in Birds of Africa (Brown et al. 1982–1997) were used to assign species to freshwater...
Wetland Area Protected Under Ramsar Convention (2014)Area of wetlands in each freshwater ecoregion protected under Ramsar Convention. We derived the area of wetlands of international importance protected under the Ramsar Convention in each freshwater ecoregion from a subset of areas included in the World Database on Protected Areas (WDPA) compiled by the UNEP World Conservation Monitoring Centre (UNEP/IUCN 2014). All Ramsar sites in the database were included, except those known to be purely marine in extent, as indicated by the Marine Classes noted as subtidal in the WDPA. Intertidal marine Ramsar sites, however, are included in the analysis because the sites may include both brackish and fresh-waters. Area attributes...
Abstract (from http://onlinelibrary.wiley.com/doi/10.1002/2014JC010395/full): A study of the freshwater discharge into the Gulf of Alaska (GOA) has been carried out. Using available streamgage data, regression equations were developed for monthly flows. These equations express discharge as a function of basin physical characteristics such as area, mean elevation, and land cover, and of basin meteorological characteristics such as temperature, precipitation, and accumulated water year precipitation. To provide the necessary input meteorological data, temperature and precipitation data for a 40 year hind-cast period were developed on high-spatial-resolution grids using weather station data, PRISM climatologies, and...
Categories: Publication;
Types: Citation;
Tags: Alaska CASC,
Forests,
Glaciers and Permafrost,
Gulf of Alaska,
Landscapes,
This U.S. Geological Survey (USGS) data release provides phytoplankton data collected from Washington Park Lake, New York, during September through October 2019. All data are reported as raw calculated values and are not rounded to USGS significant figures. This data release was produced in compliance with the open data requirements as a way to make scientific products associated with USGS research efforts and publications available to the public. This dataset includes all routine and quality assurance/quality control samples collected at six sampling locations at Washington Park Lake. Phytoplankton were identified to the lowest possible taxonomic level, and abundance (density reported as both natural units and...
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