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These data are chemical analyses of discrete samples of groundwater, stream base flow, and springs collected to support a U.S. Geological Survey study to estimate the timing and source of recharge to the basalt groundwater system in the Umatilla River basin, Oregon. Categories of data include: (1) site information (2) field measurements, (3) tracers of groundwater age and source, and (4) dissolved noble gases. These data were collected during August 26, 2014 – September 13, 2022. Data are in .csv file format.
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These data are solubility calculations for dissolved gases in groundwater samples collected to support a U.S. Geological Survey study to estimate the timing and source of recharge to the basalt groundwater system in the Umatilla River basin, Oregon. The software package Dissolved Gas Modeling and Environmental Tracer Analysis (DGEMTA; Jurgens and others, 2020) was used to develop the solubility calculations. DGMETA produces estimates of dissolved gas concentrations during recharge as well as estimates of recharge temperature, excess air, and excess nitrogen gas concentrations by optimizing the solutions of solubility equations for multiple gases dissolved in samples of groundwater. These data were collected during...


    map background search result map search result map (1) Discrete geochemical data for groundwater and surface water samples in the Umatilla River basin, 2014–2022 (2) Dissolved gas solubility calculations for groundwater samples collected in the Umatilla River basin, Oregon, 2014–2019 (1) Discrete geochemical data for groundwater and surface water samples in the Umatilla River basin, 2014–2022 (2) Dissolved gas solubility calculations for groundwater samples collected in the Umatilla River basin, Oregon, 2014–2019