Amy Wiersma

As a Hydrogeologist, I conduct local- and county-scale groundwater studies in Wisconsin and assist local and state governments, industries, and the public in interpreting and using the information to make informed decisions about groundwater. I develop educational groundwater materials and participate in outreach to increase awareness of the Survey’s groundwater resources and ensure they are easily accessible to stakeholders.

More about my work

What do hydrogeologists do?

Current projects

My current projects can be explored through this interactive map:

View interactive map

Professional affiliations

• Board of Directors, American Water Resources Association-Wisconsin Chapter
• American Water Resources Association, Wisconsin Section, member
• Geological Society of America, member
• National Groundwater Association, member
• Professional Geologist in Training (GIT)

Publications

• Zahasky, C., Gotkowitz, M., Ginder-Vogel, M., Wiersma, A.K. (2024). Modeling and sensitivity analysis to determine dominant drivers of increasing radium concentrations in public supply wells, southeast Wisconsin. ES&T Water. https://doi.org/10.1021/acsestwater.4c00660.
• Wiersma, A.K., Hook, G., Mathews, M., Scott, S., Meyer, J., Parker, B., Ginder-Vogel, M. (2023). Elevated radium activity in a hydrocarbon-contaminated aquifer. Environmental Science & Technology. 57(24):8983-8993. https://doi.org/10.1021/acs.est.2c09118.
• Scott, S.R., Wiersma, A.K., and Krinke, G. (2023). The importance of uranium isotope composition for gross alpha activity regulation. AWWA Water Science, e1329. https://doi.org/10.1002/aws2.1329.
• Plechacek, A., Scott, S.R., Gotkowitz, M.B., and Ginder-Vogel, M. (2022). Strontium and radium occurrence at the boundary of a confined aquifer system. Applied Geochemistry 142: 105332. https://doi.org/10.1016/j.apgeochem.2022.105332.
• Dematatis, M., Plechacek, A., Mathews, M., Wright, D.B., Udenby, F., Gotkowitz, M.B., and Ginder-Vogel, M. (2020). Spatial and temporal variability of radium in the Wisconsin Cambrian–Ordovician aquifer system. AWWA Water Science, e1171. https://doi.org/10.1002/aws2.1171.