Limnology data from Lake Powell, desert southwest USA (ver. 2.1, September 2024)

These data were compiled as part of a long-term (1964 - 2022) water quality monitoring program at Lake Powell. Objectives of our study were to release a consistent record of long-term water quality data. The 58-year limnology dataset captures some water quality parameters (temperature, salinity, major ions, total suspended solids) from reservoir filling to present day. It also contains a 38-year record of secchi depth, and a ~30-year record of nutrients, phytoplankton, and zooplankton assemblages. The data were collected from various sites within the Lake Powell reservoir and the Glen Canyon dam. Regular monthly sampling occurred at three sites near the dam and reservoir-wide sampling was generally conducted quarterly,...

Categories: Data; Tags: Arizona, Aztec Creek, Bridge Creek, Cathedral Canyon, Clear Creek, All tags... Colorado River, Dark Canyon, Davis Gulch, Dreissena bugensis, Escalante River, Face Canyon, Glen Canyon, Glen Canyon Dam, Glen Canyon National Recreation Area, Gunsight Canyon, Labyrinth Canyon, Lake Powell, Last Chance Canyon, Lees Ferry, Navajo Canyon, Rainbow Bridge, Red Canyon, Rock Creek Canyon, San Juan River, Sheep Canyon, USGS:62b39805d34e8f4977cb788c, Upper Colorado River Basin, Utah, Wahweap Bay, Warm Creek Bay, Warm Creek Bay Alternate, West Canyon, arid reservoir, chlorophyll a, data release, discrete sample, dissolved oxygen, field inventory and monitoring, field monitoring stations, inlandWaters, invasive bivalve, invasive species, laboratory methods, limnology, long-term ecological monitoring, long-term trends, major ions, nutrients, oxygen content (water), phytoplankton, plankton, profiles, reservoir, salinity, secchi depth, site visit, station location, total suspended solids, turbidity, water chemistry, water quality, water sampling, water temperature, zooplankton, Fewer tags

Vertical Profiles of Water Quality and Phytoplankton Data from Five Lakes in the Adirondack Park, New York State, 2021

This data release contains phytoplankton data and vertical profile measurements of water quality and light in oligotrophic (low nutrient) lakes within the Adirondack Park, New York State. Data were collected between June and October 2021 at five lakes. Four lake locations (Nearshore, Open Water, Layer, Bloom) were sampled representing one of four sample types (Bottom Sediment, Surface Water, Bloom Material, Layer). Water-quality field parameters (water temperature, dissolved-oxygen concentration and percent saturation, pH, specific conductance, turbidity, chlorophyll fluorescence, phycocyanin fluorescence, and fluorescent dissolved organic material) were measured at each sampling location from the surface to the...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adirondack Park, Algal concentration, Blue Mountain Lake, Blue-green algae, Brant Lake, All tags... Chlorophyll-a, Contaminants, HABS, Cyanobacteria, Dissolved Oxygen, East Caroga Lake, Freshwater Ecosystems, Friends Lake, Harmful Algal Bloom, Limnology, New York, PAR, Phycocyanin, QW_ADK, Specific Conductance, Surface-Water Quality Monitoring, Turbidity, USGS Science Data Catalog (SDC), United States, Vertical Profile, Water Quality, Water Quality, Water Temperature, West Caroga Lake, algae, algal blooms, biota, elevation, freshwater (surface), hazards, inlandWaters, lake ecosystems, limnology, pH, phycology, phytoplankton, Fewer tags

SUPERSEDED: Data Associated with Algal Toxin Testing of Common Murres (Uria aalge) and Forage Fish in Alaska, 2015–2017

This data release has been SUPERSEDED. No data are provided here. Data from HABs sampling data releases have been appended to U.S. Geological Survey data release: https://doi.org/10.5066/P9MLNP9H. This data set is comprised of two tables with results of algal toxin screening for saxitoxin and domoic acid. We used enzyme-linked immunosorbent assay (ELISA) and high-performance liquid chromatography (HPLC) to screen seabirds, forage fish, and marine invertebrates from the Gulf of Alaska, 2015-2017.

Categories: Data; Tags: Alaska, Algal blooms, Animals/Invertebrates, Animals/Vertebrates, Aquatic birds, All tags... Aquatic ecosystems, Biological Classification, Biosphere, Biota, Birds, Birds, Chromatography, High Pressure Liquid, Diagnosis, Domoic acid, Earth Science, Environmental Health, Enzyme-linked Immunosorbent Assay, Fish, Forage fish, Gulf of Alaska, HABS, Harmful algal bloom, Harmful algal bloom, Health, Health and disease, Immunologic techniques, Life sciences, Marine ecosystems, Pathology, Phytoplankton, Plankton, Saxitoxin, Seabirds, Toxicity, Toxins, USGS Science Data Catalog (SDC), Waders/Gulls/Auks and allies, Water quality, Wildlife Biology, Wildlife Disease, Wildlife disease, Fewer tags

Assessing spatial variability of nutrients, phytoplankton, and related water quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2022 High resolution mapping surveys

Broad-area, high-resolution, boat-based water quality mapping surveys of the Sacramento-San Joaquin Delta and Suisun Bay (Delta) of California, USA were conducted under different environmental/flow conditions in May, July, and October of 2022. The spatial and temporal variability of nutrients, phytoplankton, and related water quality parameters were assessed. This dataset includes measurements of nitrate, ammonium, orthophosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition.

Categories: Data; Tags: California, Liberty Island, Lower Sacramento, San Joaquin Delta, Suisun Bay, All tags... USGS Science Data Catalog (SDC), United States, biogeochemistry, biota, delta, drinking water use, environment, high-resolution, hydrogeology, inlandWaters, nutrient content (water), nutrients, phytoplankton, public supply water use, real-time, statistical analysis, visualization methods, water quality, water quality, Fewer tags

Tissue Concentrations and Congener Profiles of Harmful Algal Toxins in Seabirds, Forage Fish, and Other Organisms

These data are in four tables and contain results from screening tissues of marine organisms for the presence of harmful algal bloom (HAB) toxins: saxitoxin and its related congeners (STX) and domoic acid (DA). Samples collected by USGS or submitted to our laboratory by partners or other stakeholders are screened using commercially-available enzyme linked immunosorbent assays (ELISA). A subset of samples containing detectable levels of STX were subsequently analyzed using high-performance liquid chromatography (HPLC). The dataset herein consists of three tables the ELISA test results for STX and DA and HPLC summary results for STX for 1) birds, 2) fish, and 3) invertebrates. A subset of these data were previously...

Categories: Data; Tags: Alaska, Albatrosses/Petrels and Allies, Aleutians East Borough, Aleutians West Census Area, Algal blooms, All tags... Animals/Invertebrates, Animals/Vertebrates, Aquatic birds, Aquatic ecosystems, Benthic habitat, Benthos, Bethel Census Area, Biota, Birds, Birds, Bivalves, Bristol Bay Borough, Chromatography, High Pressure Liquid, Chugach Census Area, Coastal ecosystems, Coastal fisheries, Coastal resources, Diagnosis, Domoic acid, Ecology, Environment, Environmental Health, Enzyme-linked Immunosorbent Assay, Estuarine habitat, Fish, Forage fish, HABS, Harmful algal bloom, Health and disease, Immunologic techniques, Juneau City and Borough, Kenai Peninsula Borough, Kodiak Island Borough, Lake and Peninsula Borough, Macroinvertebrates, Marine ecosystems, Matanuska-Susitna Borough, Migratory birds, Migratory species, Mollusks, Municipality of Anchorage, Nome Census Area, North Slope Borough, Northwest Arctic Borough, Pathology, Pelagic habitat, Phytoplankton, Plankton, Saxitoxin, Seabirds, Toxicity, Toxins, USGS Science Data Catalog (SDC), Waders/Gulls/Auks and Allies, Water quality, Wildlife, Wildlife Biology, Wildlife Disease, Wildlife disease, Yakutat City and Borough, Fewer tags