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Ephemeral Stream Channel Stability Data from the Grand Valley, Western Colorado, 2018-21 Ephemeral Stream Channel Stability Data from the Grand Valley, Western Colorado, 2018-21
This U.S. Geological Survey (USGS) data release provides the data used to predict areas with the greatest probability of ephemeral stream channel instability on north side of the Grand Valley in western Colorado, during 2018-20. The USGS developed a method for automatically extracting channel cross-section geometry from existing remotely sensed terrain models. Based on estimated flood...
Statewide base-flow estimates for Oregon, water years 1980–2023 Statewide base-flow estimates for Oregon, water years 1980–2023
Base flow, the groundwater contribution to streamflow, is beneficial data for analysis of groundwater-flow systems. This data release includes base-flow estimates and streamflow data for 471 Oregon streamgage sites. Categories of data include: (1) site information, (2) water year estimates of base flow and streamflow, and (3) daily estimates of base flow. Water-year base-flow estimates...
Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) and Other Chemical Constituents for Groundwater and Surface-Water Samples on Cape Cod, Massachusetts, 2019-2024 Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) and Other Chemical Constituents for Groundwater and Surface-Water Samples on Cape Cod, Massachusetts, 2019-2024
Groundwater, surface-water, and associated quality assurance samples were collected across western Cape Cod, Massachusetts and analyzed for per- and polyfluoroalkyl substances (PFAS) from September 2019 through November 2024. Water-quality properties measured at the time of sample collection included pH, specific conductance, temperature, and dissolved oxygen. Samples were also analyzed...
Estimated crop irrigation water use withdrawals in Douglas Active Management Area Groundwater Basin, Arizona for 2024 Estimated crop irrigation water use withdrawals in Douglas Active Management Area Groundwater Basin, Arizona for 2024
Observations of irrigated agricultural land within the Douglas Active Management Area Groundwater Basin in Arizona. Crops were verified in situ twice in 2024, first on May 28th and again on Aug 9th; based on digitized field boundaries. Field boundaries were digitized from U.S. Department of Agriculture, National Agriculture Imagery Program County Mosaic 2023 imagery for Arizona and...
Presumptive sources and relative heat index of 6PPD-quinone at the NHDPlusV2 catchment scale across the conterminous U.S. Presumptive sources and relative heat index of 6PPD-quinone at the NHDPlusV2 catchment scale across the conterminous U.S.
Geospatial datasets related to 6PPD-quinone, a compound intended to increase the life span of tires, were acquired and integrated into a relative heat index framework across the conterminous United States. 6PPD-quinone is known to be the cause of Coho Salmon kills following storm events, and more is being learned about the impacts it may have on other species. Sources and influential...
Aquatic Invertebrate Composition from Ponds and Lakes of the Arctic Coastal Plain, Alaska, 2012-2013 Aquatic Invertebrate Composition from Ponds and Lakes of the Arctic Coastal Plain, Alaska, 2012-2013
This dataset provides information on aquatic invertebrate composition from ponds (n = 16; surface area 0.02 km2) and lakes (n =16, surface area > 0.10 km2) on the central Arctic Coastal Plain of Alaska. Ponds and lakes were selected for sampling as part of a larger study of Arctic water body food webs. Details on the study area and findings are published in Laske et al. 2018 and Laske et...