Dwight D Sparks

Waterborne Gradient Self-potential, Temperature, and Conductivity Logging of Lake Travis, Texas, near the Bee Creek Fault, March–April 2020

This data release provides gradient self-potential (SP), conductivity, and temperature measurements made during an investigation of surface-water and groundwater exchange in Lake Travis near Austin, Texas, where the Colorado River is incised into two zones of the Cretaceous-age Trinity aquifer (the lower-zone, and several hydrostratigraphic units of the middle zone). The voltage, temperature, and conductivity data contained herein were continuously logged along three longitudinal profiles with the logging sensors positioned at depths of 3.0 and 6.1 meters vertically below the surface of Lake Travis, and in a cove along a fourth continuous, non-linear profile of intersecting tracks with the logging sensors positioned...

Tags: Austin, Colorado River, Cretaceous, Geophysics, Geophysics, All tags... Hydrology, Hydrology, Lake Travis, Self-potential, Surface-water and groundwater exchanges, Texas, Travis County, Trinity aquifer, USGS Science Data Catalog (SDC), Fewer tags

Spatial profiles of waterborne self-potential and water-quality-property data acquired September 8–11, 2023, in Elm and Hartwell Brooks and the Shawsheen River near Hanscom Air Force Base, Bedford, Massachusetts, to identify groundwater seepage locations.

This data release contains geophysical and water-quality property data measured by the U.S. Geological Survey (USGS) along downstream continuous profiles in surveyed reaches of Elm Brook, Hartwell Brook, and the Shawsheen River near Hanscom Air Force Base in Bedford, Massachusetts. The geophysical data consist of spatial profiles of waterborne self-potential (WaSP) voltages attributed to changes in electrical potential along the respective reaches of each stream. The water-quality data consist of spatial profiles of temperature, specific conductance, turbidity, pH, and optical dissolved-oxygen concentration measured in situ in the streams on September 8 and September 10, 2023. A 190-meter (m) long reach of Hartwell...

Categories: Data; Tags: Bedford, Massachusetts, Elm Brook, Geophysics, Geophysics, Gradient self-potential, All tags... Hanscom Air Force Base, Hartwell Brook, Hydrology, Hydrology, Massachusetts, Optical dissolved oxygen, Percent hydrogen, Seep, Seepage, Self-potential, Shawsheen River, Specific conductance, Surface-water and groundwater exchanges, Surface-water conductivity, Surface-water temperature, Turbidity, USGS Science Data Catalog (SDC), Water Resources, Water quality, Fewer tags

82.4-kilometer long profiles of waterborne self-potential and water-quality data measured August 28–September 1, 2023, in the Trinity River between the Elm Fork confluence and a Pump Station in Scurry, Texas

This data release contains 82.4-kilometer (km) long spatial profiles of geophysical and water-quality properties data acquired along five semi-continuous segments of the Trinity River that were surveyed August 28 – September 1, 2023. The surveyed reaches start at the Elm Fork confluence in the Dallas, Texas metropolitan area and end at a pump station in Scurry, Texas. The geophysical dataset consists of a spatial profile of waterborne self-potential (WaSP) voltages attributed to changes in electrical potential along the surveyed reach. The water-quality properties data consist of spatial profiles of temperature, specific conductance, turbidity, pH, oxidation-reduction potential, and dissolved-oxygen concentration...

Categories: Data; Tags: Dallas, Texas, Elm Fork, Geophysics, Geophysics, Gradient self-potential, All tags... Hydrology, Hydrology, Optical dissolved oxygen, Self-potential, Specific conductance, Surface-water and groundwater exchanges, Surface-water conductivity, Surface-water temperature, Texas, Trinity River, Trinity River, Turbidity, USGS Science Data Catalog (SDC), Water Resources, Water quality, pH, Fewer tags