Randall Bayless
Randall is a Research Hydrologist in the RGEG program and Groundwater Specialist for the Indiana-Kentucky Water Science Center; he has worked for the science center since 1989. He also is an Adjunct Assistant Professor at Indiana University - Purdue University Indianapolis.
Projects at USGS have covered a wide range of interests including
- karst hydrology,
- isotope geochemistry,
- Lake Michigan,
- horizontal flow meter technologies,
- pesticide and nutrient fate,
- unsaturated zone instrumentation and transport modeling,
- high pH (slag) and low pH (coal mine) settings,
- surface and borehole geophysics, and
- wetland hydrology.
Education
Attended Wabash College, Purdue University (B.S. 1983), Indiana University (M.S. 1987, Ph.D. 1994).
Received a B.S. from Purdue University with a geology major and mathematics minor.
Received a M.S. from Indiana University with a major in hydrogeology and a minor in numerical methods. The M.S. thesis used numerical modeling to verify field evidence of ice-sheet surging during the Pleistocene epoch.
Received a Ph.D. from Indiana University with a major in hydrogeology and a minor in geochemistry. The Ph.D. dissertation used hydraulic and geochemical modeling to determine that hydrated iron-sulfate minerals were responsible for acute acid-mine drainage events.
Horizontal Borehole Flowmeters
Horizontal borehole flowmeters may provide opportunities to measure the rate and direction of groundwater flow and the advective transport of dissolved and neutrally buoyant contaminants. Optical, acoustic, thermal, and chemical technologies are being evaluated. Research is directed toward defining the limits of each technology and the environmental and hydrologic conditions that are best suited for each tool. Testing has been done in field settings and laboratory aquifer simulators.
Science and Products
Hydrologic data and groundwater flow simulations in the vicinity of Long Lake, Indiana Dunes National Lakeshore, near Gary, Indiana
The role of efflorescent sulfate salts in Indiana’s mine water quality
Hydrogeology and simulation of groundwater flow at the Green Valley reclaimed coal refuse site near Terre Haute, Indiana
Accuracy of flowmeters measuring horizontal groundwater flow in an unconsolidated aquifer simulator.
Predicting unsaturated zone nitrogen mass balances in agricultural settings of the United States
Pesticide fate and transport throughout unsaturated zones in five agricultural settings, USA
Simulated fate and transport of metolachlor in the unsaturated zone, Maryland, USA
Influences of the unsaturated, saturated, and riparian zones on the transport of nitrate near the Merced River, California, USA
Hydrologic Characteristics of a Managed Wetland and a Natural Riverine Wetland along the Kankakee River in Northwestern Indiana
Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals
Use of 87Sr/86Sr and δ11B to Identify Slag-Affected Sediment in Southern Lake Michigan
Mineral precipitation and dissolution at two slag-disposal sites in northwestern Indiana, USA
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Hydrologic data and groundwater flow simulations in the vicinity of Long Lake, Indiana Dunes National Lakeshore, near Gary, Indiana
The role of efflorescent sulfate salts in Indiana’s mine water quality
Hydrogeology and simulation of groundwater flow at the Green Valley reclaimed coal refuse site near Terre Haute, Indiana
Accuracy of flowmeters measuring horizontal groundwater flow in an unconsolidated aquifer simulator.
Predicting unsaturated zone nitrogen mass balances in agricultural settings of the United States
Pesticide fate and transport throughout unsaturated zones in five agricultural settings, USA
Simulated fate and transport of metolachlor in the unsaturated zone, Maryland, USA
Influences of the unsaturated, saturated, and riparian zones on the transport of nitrate near the Merced River, California, USA
Hydrologic Characteristics of a Managed Wetland and a Natural Riverine Wetland along the Kankakee River in Northwestern Indiana
Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals
Use of 87Sr/86Sr and δ11B to Identify Slag-Affected Sediment in Southern Lake Michigan
Mineral precipitation and dissolution at two slag-disposal sites in northwestern Indiana, USA
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.