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Continuous resistivity profiling, direct current resistivity, and frequency domain electromagnetic data for the Dolores River, Paradox Valley, Colorado, 2017 This data release includes raw and processed (inverted) data for three different geophysical methods, continuous resistivity profiles (CRP), direct current electrical resistivity tomography (ERT), and frequency domain electromagnetic induction (FDEM) data. These surface geophysical methods were used as a proxy for groundwater salinity in the Paradox Valley in western Colorado to investigate temporal and spatial variations in the position of brine-rich groundwater under the Dolores River. Continuous resistivity profile surveys along a 8-10 km reach of the Dolores River were conducted on March 7, May 16, and September 13 of 2017. The ERT surveys were conducted along 3 lines crossing the river and 1 line parallel to... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bedrock, Colorado, Dolores River, Montrose County, Paradox Valley, USGS Science Data Catalog (SDC), All tags... brine-rich groundwater, continuous resistivity profiling, geophysical survey, geoscientificInformation, Fewer tags Water-level and pumping data, water-level models, and estimated hydraulic properties for the Paradox Valley alluvial aquifer in Montrose County, Colorado, 2013 Aquifer testing was conducted in the Paradox Valley alluvial aquifer in Montrose County, Colorado, including short-term (slug tests) and long-term (pumping tests) stresses on the hydrologic system to determine hydraulic properties of the aquifer. Slug tests were conducted at four wells in March 2013, with only one well producing data that could be interpreted using analytical solutions. In the other three slug tests, water-level displacement was not instantaneous and displayed substantial noise meaning that the analytical solutions could not be applied. Pumping tests were conducted in March through June of 2013 by initiation of pumping at seven production wells screened in the aquifer and observation of water-level... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Hydrology, Montrose County, Paradox Valley, USGS Science Data Catalog (SDC), All tags... Water Resources, geoscientificInformation, groundwater, groundwater flow, groundwater level, hydraulic properties, Fewer tags