Scott Ikard

I am a licensed Professional Engineer with thirteen years of professional research and project engineering experience in geophysics, hydrogeology, and hydrology, with auxiliary experiences in fluvial geomorphology, civil, and geotechnical engineering.


Currently, I am a Hydrologist in the Geophysics unit of the United States Geological Survey's Texas Water Science Center, in Austin, Texas. I plan and perform applied research studies and projects that broadly encompass proposals development, geophysical and hydrologic survey planning, instrumentation, data acquisition, data processing, and publication of surface, waterborne, airborne, and borehole hydrogeophysical data. The goals of my applied work frequently include delineation and correlation of aquifer systems, geophysical assessments of local and regional surface and ground water exchange-flow patterns, quantification and uncertainty analysis of hydraulic and geophysical properties of the vadose zone, confined and unconfined aquifers throughout the world.


Professional History

United States Geological Survey. GS1315-11 Hydrologist/Geophysicist. Austin, Texas 06/2014 – Present

  • Oversight, site selection, planning and preparation, and coordination of groundwater conservation districts, river authorities, municipal and government agencies, and public stakeholders in research-drilling and near-surface hydrogeophysical projects.
  • Planning, implementation, and oversight of waterborne and land-based geophysical field surveys using time and frequency domain electromagnetics, self-potential mapping, electric resistance tomography, seismic refraction, dilution gaging, water-level monitoring, differential global positioning systems, Calibrated surface and borehole geophysical and hydrologic instruments, and performed troubleshooting of logging instruments and data acquisition systems in the field.
  • Performed field acquisition, pre-processing, inversion, and post-processing of vertical electrical soundings and transient electromagnetic soundings, as well as surface self-potential and electrical resistivity tomography data, to map alluvial and deep confined aquifers and produce conceptual hydro-stratigraphic models for groundwater flow modeling.
  • Developed data-processing codes and algorithms for (a) automated hydro-stratigraphic interpretation and geo-electric correlations from geophysical well logs and drillers logs, (b) automated baseflow separation and recession analysis, (c) digital signal processing, (d) groundwater flow modeling, particle tracking, parameter estimation and uncertainty analysis, (e) 2D and 3D forward and inverse modeling of self-potential and DC resistivity data using finite elements, finite differences, and linear filter theory.
  • Published innovative, novel research in peer-reviewed journals and USGS reports.

National Science Foundation. Research Fellow, Colorado School of Mines. 05/2009 - 08/2013

  • Developed a novel monitoring methodology to detect the initiation of anomalous seepage in earthen dams, and to hydraulically characterize preferential ground water flow in real-time using hydrologic tracers.
  • Performed time-lapse geophysical monitoring during self-constructed laboratory experiments and field research projects at three earthen dams, using time-lapse self-potential, time-lapse electrical resistivity tomography, time-lapse temperature, and seismic refraction tomography surveys.

Golder Associates Inc. Staff Engineer II. Lakewood, Colorado 02/2008-11/2011

  • Developed water usage strategies and abstraction plans for Copper and Molybdenum mining operations.
  • Designed and implemented a hydrologic monitoring and telemetry network to (a) measure and model surface evaporation in real-time, (b) parameterize and improve water balances, and (c) analyze surface evaporation dynamics from tailings dams, tailings ponds, and free surfaces of water storage reservoirs.
  • Developed a 2D finite-difference groundwater model for a large unconfined alluvial aquifer to predict long-term well-field performance using a probabilistic framework.
  • Modeled fissure erosion in earthen dams, head-cutting at nick points in surface channels, abrasion-erosion in concrete spillways and hydraulic jump stilling basins to assess failure potential and develop remedial strategies for clients.

TZA Water Engineers, Inc. Intern. Lakewood, Colorado 05/2006 - 02/2008

  • Performed constant-rate and variable-rate pump tests at municipal and domestic wells, and processed distance and time draw-down and recovery data to characterize aquifer hydraulic properties.
  • Developed GIS databases and interpreted Colorado aerial photography to (a) analyze consumptive water usage, water-rights transactions, and stream-depletions due to agricultural water demands, (b) map conveyance infrastructure and ditch irrigation systems, and (c) to research historical diversion, irrigation, and agricultural land use practices in Colorado.
  • Assisted senior engineers in developing Water Court applications and related documents for water rights exchanges, consumptive use analyses, augmentation plans, substitute water supply plans, and injury calls placed on Colorado's water resources.

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