M.A. Briggs N. Nelson P. Gardner J.W. Lane 2018 Instrument files, .csv, .txt, and software program files Reston, VA U.S. Geological Survey Briggs, M.A.,Nelson, N., Gardner, P., and Lane, J.W., 2018, Electrical geophysical data collected in the Scott M. Matheson Wetlands Preserve Near Moab, Utah: U.S. Geological Survey, doi:10.5066/F75M63ZF. https://doi.org/10.5066/F75M63ZF Vertical electrical soundings (VES) are used to develop depth-resolved models of aquifer resistivity by making electrical potential measurements at increasingly larger electrode spacing, with the array centered around a common point. Variations in modeled electrical resistivity with depth can be used to infer groundwater salinity and preferential fresh groundwater flow zones. Each of the 4 VES measurement integrates approximately 11 individual electrical soundings with 4 electrodes driven into the soil in a linear Wenner array with electrode spacings ranging from 1 to 40 m. Data were collected manually with a SuperSting electrical resistivity meter (AGI - Advanced Geosciences, Inc) and recorded by hand in a field book. For this study, n=4 VES measurements were collected in support of larger-scale electromagnetic induction imaging (EMI) geophysical data described in another section of this data release. Although they are more time consuming to collect, VES measurements are made in direct contact with the land surface and may therefore provide more extensive (compared to EMI) information regarding depth-specific layering of bulk electrical conductivity to approximate 25 m depth using the electrode configuration utilized here. Ultimately these data were collected to infer discharge flowpaths of relatively fresh groundwater to the Colorado River that are embedded in natural brine groundwater. Data collection and analysis has been supported by a variety of sources, including the U.S. Geological Survey Toxic Substances Hydrology Program. 20150331 20150402 ground condition In work Irregular -109.60 -109.55 38.61 38.56 USGS Thesaurus Groundwater InlandWaters Surface Water electromagnetic surveying hydrogeology hydrology geophysics ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:5bf46b60e4b045bfcae1e9a4 None Utah Moab Scott M. Matheson Wetlands Preserve none none Martin Briggs U.S. Geological Survey, Hydrogeophysics Branch mailing and physical

U.S. Geological Survey, 11 Sherman Place, Unit 5015

Storrs CT 06269 USA 860-487-7402 mbriggs@usgs.gov Data collection and analysis has been supported by a variety of sources, including the U.S. Geological Survey Toxic Substances Hydrology Program. .csv and .txt files This data release includes only raw data as recorded by hand from the instrument display in the field during each measurement. Data were reviewed for consistency. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted Data were collected in a variety of ways depending on the method and objective, as described in the local readme files for each field deployment/method. 2015 Scott M. Matheson Wetlands Preserve, Moab, UT, USA Point 0.001 0.001 Decimal degrees North American Datum of 1983 GRS 1980 6378137.0 298.257222101 README_VES The high level text file that describes the contents of each folder of this data release. Producer defined Raw_Data.zip A zip file with the raw VES data (.csv files) as recorded in the field. Files are described in more detail by the "README_VES.txt" file contained in this folder. Producer defined U.S. Geological Survey - ScienceBase Catalogue U.S. Geological Survey mailing and physical

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Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. 20200826 Martin Briggs U.S. Geological Survey, Hydrogeophysics Branch Research Hydrologist mailing and physical

U.S. Geological Survey, 11 Sherman Place, Unit 5015

Storrs CT 06269 USA 860-487-7402 mbriggs@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998