• PhD, Geology, University of Illinois, in progress
• M.S., Geology, Northern Arizona University, 2014
• B.S., Geology, Augustana College, 2008

Illinois Licensed Professional Geologist (196-001452)

I am interested in understanding how faults and other geologic structures affect groundwater movement and groundwater quality, particularly in the deep sandstone aquifers in northern Illinois. More broadly, I am interested in the integration of 3D geologic models and geophysical datasets (seismic surveys, airborne electromagnetic surveys) into groundwater flow models, assessing surface water/groundwater interactions, conducting water supply planning initiatives, and visualization of groundwater data and modeling results in online GIS web applications.

Development of the Illinois Groundwater Monitoring Network Data Portal for real-time monitoring of groundwater water levels across Illinois.

Shallow Groundwater Sustainability in Kane County- Interactive Story Map

Changing Groundwater Levels in the Sandstone Aquifers- Interactive Story Map

Hadley, D.R., Cullen, C., Abrams, D.B., 2026, Shallow Groundwater Sustainability in Kane County: Updated Modeling, Water Availability, and Chloride Risk Assessment, ISWS Contract Report 2026-01, https://hdl.handle.net/2142/133029 

Hulsey, K.M., Minsley, B.J., Hadley, D.R, Abrams, D., Phillips, A., and Bristow, E.L., 2025, Top of bedrock elevation surface derived from airborne electromagnetic survey data for Illinois and the Illinois River Basin, 2025: U.S. Geological Survey Data Release, https://doi.org/10.5066/P1DYYM2G

Iordache, V., Hadley, D.R., 2025, Shallow Aquifer Conditions in the Greater Barrington Region: Assessing Groundwater Elevations and Municipal Water Use (2014-2024), ISWS Contract Report 2025-02, https://hdl.handle.net/2142/128860

Cullen, C., Hadley, D.R., 2024, Kane County Shallow Groundwater Quality 2023: A Twenty-Year Retrospective, ISWS Contract Report 2024-03, https://hdl.handle.net/2142/125283

Abrams, D.B., Cullen, C., Mannix, D.H, Hadley, D.R., 2023, Groundwater Flow Models of Illinois 2023.0: Data, Processes, Model Performance, and Key Results, ISWS Contract Report 2023-04, https://hdl.handle.net/2142/121782&nbsp

Hadley, D.R., Abrams, D.B., Mannix, D.H., Cullen C., 2021, Using production well behavior to evaluate risk in the depleted Cambrian-Ordovician sandstone aquifer system, Midwestern USA, Water Resources Research, https://doi.org/10.1029/2020WR028844

Hadley, D.R., Abrams, D.B., Roadcap, G.S., 2019, Modeling a Large-Scale Historic Aquifer Test-Insight into the Hydrogeology of a Regional Fault Zone, Groundwater, https://doi.org/10.1111/gwat.12922

Mannix, D.H., Abrams, D.B., Hadley, D.R., Roadcap, G.S., 2018, Conceptualizing leakage and storage contributions from long open interval wells in regional deep basin flow models, Hydrologic Processes, https://doi.org/10.1002/hyp.13324

Abrams, D.B., Hadley, D.R., Mannix, D.H., Roadcap, G.S., Meyer, S.C., Hlinka, K.J., Rennels, K.L., Bradbury, K.R., Chase, P.M., and Krause, J.J., 2015, Changing Groundwater Levels in the Sandstone Aquifers of Northern Illinois and Southern Wisconsin─ Impacts on Available Water Supply, ISWS Contract Report 2015-02, https://hdl.handle.net/2142/90999

• Geological Society of America (Member since 2007)
• National Groundwater Association (Member since 2017)
• American Geophysical Union (Member since since 2020)

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