National Geologic Map Database
General Information
- Title: Groundwater age estimates for the Mississippi River Valley alluvial aquifer based on tracer data collected during 2018–20
- Author(s): Gratzer, M.C., Solder, J.E., Knierim, K.J., Kingsbury, J.A., O’Reilly, A.M., and Davidson, G.R.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Scientific Investigations Report SIR-2024-5127
- Publication Date: 2025
- Map Scale: 1:6,666,700
- Cross Section: Yes
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